If 0 ＜ a ＜ 1, then the solution set of inequality 〔 x-a 〕 〔 1 / x-a 〕 ＜ 0 is the solution step

If 0 ＜ a ＜ 1, then the solution set of inequality 〔 x-a 〕 〔 1 / x-a 〕 ＜ 0 is the solution step

0＜a＜1,1/a＞1,1/a＞a＞0
The solution set of inequality [x-a] [1 / 2 of x-a] < 0 is: a < x < 1 / A

The following inequalities are solved by addition and subtraction
1.{3x+5y=-2 3x-y=4
2.{x-2y=8 3x+2y=16
3. {3 / 2 x + 2Y = 1, 3 / 2 X-Y = - 5
4.{3x-2y=8 3x+2y=16
5.{5x+6y=13 7x+18y=-1
6. {half x + 3Y = 7 2x-5y = - 6

1.3x + 5Y = - 2, ① 3x-y = 4, ② - ② get 6y = - 6y = - 1, ③ substitute ② get 3x + 5 × (- 1) = - 23x-5 = - 23x = 5-23x = 3x = 1, the solution of the system of equations is x = 1, y = - 12. X-2y = 8, ① 3x + 2Y = 16, ② + ② get 4x = 24x = 6, ③ substitute ① get 6-2y = 8-2y = 8-6-2y = 2Y = - 1, the solution of the system of equations is x = 6, y =

(offer a reward of 30 points) Grade 7 Volume 2 solve 100 binary linear equations, 100 inequalities and 70 inequalities
The teacher arranges the child to be the parent, does not have the question

 1X-15≥2(X-14)-10     7X-1≤1(X-8)-82.  4X-19≥6(X-16)-1     1X+18≥3(X+4)+33.  6X-16<1(X-12)-6     5X+2≥6(X+7)+44.  2X-20≥4(X-15)-7     6X+19<1(X+3)+95.  3X+17>6(X+11)+2     1X-8≤1(X-4)-76.  7X-14>7(X-18)-5     4X+12≤5(X+6)+87.  1X+10≤2(X+14)+10     5X-9≥7(X-2)-38.  4X-15≤6(X-16)-1     2X+6≥1(X+9)+69.  6X+4<5(X+17)+9     3X-2<3(X-5)-110.  1X+13≤5(X+20)+5     7X+19>4(X+14)+311.  5X-10≥6(X-7)-8     2X+8≥4(X+15)+112.  6X-6<1(X-3)-3     6X-5<5(X-3)-413.  3X-4<2(X-11)-7     7X+2>7(X+19)+914.  5X-13≤2(X-12)-5     2X+11≥7(X+20)+715.  1X+10≤3(X+19)+9     6X-20<6(X-12)-416.  3X-19>3(X-20)-7     7X+17>1(X+8)+917.  5X-8≥3(X-2)-5     4X-6≤7(X-1)-618.  2X+5≥4(X+9)+8     6X+15<7(X+20)+619.  3X-13<4(X-8)-9     3X-12<1(X-8)-1020.  7X+10>6(X+16)+2     5X-1≤1(X-9)-821.  2X+12<3(X+2)+3     6X-10<1(X-10)-622.  6X-9<4(X-9)-7     3X-7<2(X-17)-923.  1X+18≤4(X+11)+5     5X-16≥2(X-19)-724.  4X-15≤5(X-18)-9     2X+6<1(X+11)+425.  6X-4<5(X-19)-7     4X+15≤7(X+14)+1026.  1X-6<3(X-7)-5     1X-12≤2(X-1)-327.  5X+3<4(X+14)+9     2X-1>1(X-2)-128.  7X+12≤4(X+15)+7     6X+11≤7(X+15)+829.  4X-1≥3(X-8)-3     1X-19<7(X-16)-630.  6X-10> 3(X-9)-1     4X+1≥5(X+2)+731.  3X-20≤2(X-20)-1     7X+18≤6(X+8)+332.  5X-9<2(X-1)-8     2X+19>4(X+14)+433.  7X-10≥6(X-7)-9     6X-16>5(X-1)-834.  4X+7≥7(X+14)+3     1X-18<3(X-8)-935.  6X+9≤5(X+1)+4     5X+7>2(X+20)+536.   3X-18≥4(X-15)-8     7X+17<1(X+3)+137.  5X-7>4(X-16)-6     2X+18≥6(X+9)+238.  2X+17≤3(X+8)+3     7X-8<5(X-1)-939.  4X+18>7(X+14)+4     1X-17≤5(X-2)-640.  1X-8≤6(X-7)-1     6X+6≥4(X+15)+341.  3X-17<6(X-6)-1     1X+8>2(X+20)+642.   5X-18≥4(X-13)-2     5X-17≤1(X-12)-343.  3X+8<3(X+5)+9     7X-19>5(X-18)-444.  5X+9≥1(X+11)+10     4X+8≤4(X+11)+145.  2X-18<1(X-13)-3     7X+8>3(X+6)+846.  4X-19≥5(X-19)-4     2X+10<1(X+12)+947.  1X+9<4(X+11)+10     6X-19>7(X-5)-648.  4X+10≥2(X+18)+1     1X-1<4(X-11)-749.  6X+11>7(X+2)+5     5X+10>4(X+2)+650.  3X-1≤6(X-15)-1     1X+12≥1(X+8)+751.  6X-15≤1(X-6)-5     5X-1<7(X-20)-452.  3X+5≥7(X+19)+2     7X+16>2(X+13)+553.  5X-6≤5(X-6)-1     3X+17<7(X+19)+654.  2X+16≥4(X+19)+7     7X-7>6(X-12)-355.  5X+10≥6(X+10)+1     2X-8≥4(X-18)-456.  2X-19≥5(X-1)-10     7X+10>1(X+14)+657.  4X-1≤3(X-7)-1     2X+11<5(X+20)+758.  7X+15≤5(X+18)+5     6X+1>4(X+13)+359.  4X-4≥4(X-11)-2     2X+15> 7(X+6)+560.  7X+18≥7(X+4)+3     6X+5≤5(X+18)+21.2x+9y=81   3x+y=34 2.9x+4y=35   8x+3y=30 3.7x+2y=52   7x+4y=62 4.4x+6y=54   9x+2y=87 5.2x+y=7   2x+5y=19 6.x+2y=21   3x+5y=56 7.5x+7y=52   5x+2y=22 8.5x+5y=65   7x+7y=203 9.8x+4y=56   x+4y=2110.5x+7y=41   5x+8y=4411.7x+5y=54   3x+4y=3812.x+8y=15   4x+y=2913.3x+6y=24   9x+5y=4614.9x+2y=62   4x+3y=3615.9x+4y=46   7x+4y=4216.9x+7y=135   4x+y=4117.3x+8y=51   x+6y=2718.9x+3y=99   4x+7y=9519.9x+2y=38   3x+6y=1820.5x+5y=45   7x+9y=6921.8x+2y=28   7x+8y=6222.x+6y=14   3x+3y=2723.7x+4y=67   2x+8y=2624.5x+4y=52   7x+6y=7425.7x+y=9   4x+6y=1626.6x+6y=48   6x+3y=4227.8x+2y=16   7x+y=1128.4x+9y=77   8x+6y=9429.6x+8y=68   7x+6y=6630.2x+2y=22   7x+2y=47 31. x-y=3   3x-8y=4   x=y+332.  3x+2y=7    5x-2y=133. x=3-5t   3y-2t=x(33) 40x+31y=6043 45x-y=3555 (34) 47x+50y=8598 45x+y=3780 (35) 45x-30y=-1455 29x-y=725 (36) 11x-43y=-1361 47x+y=799 (37) 33x+59y=3254 94x+y=1034 (38) 89x-74y=-2735 68x+y=1020 (39) 94x+71y=7517 78x+y=3822 (40) 28x-62y=-4934 46x+y=552 (41) 75x+43y=8472 17x-y=1394 (42) 41x-38y=-1180 29x+y=1450 (43) 22x-59y=824 63x+y=4725 (44) 95x-56y=-401 90x+y=1530 (45) 93x-52y=-852 29x+y=464 (46) 93x+12y=8823 54x+y=4914 (47) 21x-63y=84 20x+y=1880 (48) 48x+93y=9756 38x-y=950 (49) 99x-67y=4011 75x-y=5475 (50) 83x+64y=9291 90x-y=3690