5 / 7 × 3 + 5 / 7 × 4-5 / 7 = (5 / 36 + 1 / 13) × 13 = 45 × 44 / 1 = 85 × 84 / 1 = (simple calculation) Process!

5 / 7 × 3 + 5 / 7 × 4-5 / 7 = (5 / 36 + 1 / 13) × 13 = 45 × 44 / 1 = 85 × 84 / 1 = (simple calculation) Process!

5/7(3+4)-5/7+30/7;5/36*13+1/13*13=101/36;(44+1)*1/44=45/44;(84+1)/84=85/84

How to do 45 * 43 out of 44 with simple calculation

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45 × 43/44
=(44+1)×43/44
=44×43/44+43/44
=43 and 43 / 44
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How much is 7 / 44 × 43

44 × 7 / 43
=(43 + 1) × 7 / 43
=7 of 43 × 43 + 7 of 1 × 43
=43 + 7
=7 and 7 / 43

What is a number equal to the sum of three fifths of it plus twenty

3/5×X+20=X
X=50

If x and y are opposite numbers, and (x + Y-3) (x-y-2) = 9, then how much is x + y equal? How much is X-Y equal?

x. Y is the opposite number, that is, y = - X
The formula (x + Y-3) (x + Y-2) = 9 is OK
Write as [x + (- x) - 3] [x - (- x) - 2] = 9
-3(2x-2)=9
-6x+6=9
-6x=3
x=-0.5 y=0.5
So x + y = - 0.5 + 0.5 = 0
x-y=-0.5-0.5=1

Is x equal to 9 the equation

Of course, because all equations with unknowns and equal signs are equations

If two-thirds of the number a is equal to one-half of the number B, is the number a greater or the number b greater?
Please do not use \,

Suppose two thirds of a is X
A: X △ 2 / 3 = 3 / 2 x
B: X △ half = double x
So big B
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One half of B minus 7 is equal to a plus B series equation, and the solution is given
b/2-7=a+b

1/2b-7=a+b
0.5b-7=a+b
0.5b-a=7+b
-0.5b=a+7
b=-(a+7/0.50)
-a=7+b-0.5b
-a=7+0.5b
a=-7-0.5b
So a = - 7-0.5b, B = - (a + 7 / 0.50)

One half of a number is six, and its square is equal to six

144

List the equation and find the solution of the equation. Five times of a number plus nine times of the number equals 196. What is the number?

Let this number be X & nbsp; 5x + 9x = 196 & nbsp; & nbsp; & nbsp; 14x = 19614x △ 14 = 196 △ 14 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 14 A: this number is 14