5-5 x + 1 = x, 2 x-3 = 5 x, 3 2x-1 = 6 2x + 1-1, 2 x + 1-1 = 3 x, 2-3x

5-5 x + 1 = x, 2 x-3 = 5 x, 3 2x-1 = 6 2x + 1-1, 2 x + 1-1 = 3 x, 2-3x

5-5 x + 1 = x 25 - (x + 1) = 5x24 = 6xx = 42 x-3 = 5 x 5x-30 = 2x3x = 30x = 103 2x-1 = 6 2x + 1-12 (2x-1) = 2x + 1-64x-2 = 2x-52x = - 3x = - 3 / 22 x + 1-1 = 2-3x3 (x + 1) - 6 = 2 (2-3x) 3x + 3-6 = 4-6x9x = 7x = 7 / 9

The square of X multiplied by the square of (X-2) - 9 factorization factor, the square of (3x + 2x + 1) factorization factor - (2x + 3x + 3) factorization factor

Original formula = [x (X-2) + 3] [x (X-2) - 3]
=(x²-2x+3)(x-3)(x+1)
Original formula = (3x & # 178; + 2x + 1 + 2x & # 178; + 3x + 3) (3x & # 178; + 2x + 1-2x & # 178; - 3x-3)
=(5x²+5x+4)(x²-x-2)
=(5x²+5x+4)(x-2)(x+1)

Given x times x x x 2x-1 = 0, find the value of 3x times x x x 6x x 2007

x² + 2x - 1 = 0
x² + 2x = 1
Multiply both sides by 3 at the same time
3x² + 6x = 3
So 3x & # 178; + 6x + 2007
= 3 + 2007
= 2010

0.02-0.1x-1 of 0.03 = 1-3x of 2.5

0.03÷0.02-0.1x-1=2.5-3x
1.5-0.1x-1=2.5-3x
0.5-0.1x=2.5-3x
-2=-2.9x
x=0.68

(1) 3x of 7 + 1x of 3 = 3 (2) 2x of 21 - 3x of 5 = 1 (3) x of 6 = 5 of 12
Write the process down

3x/7+x/3=3/21
9x/21+7x/21=3/21
16x/21=3/21
16x=3
x=3/16
(2) 2x-3x/5=1
7x/5=1
x=5/7
(3) x-x/6=5/12
5x/6=5/12
10x/12=5/12
10x=5
x=1/2

15 X-7

15 (X-7)

5/3X+5/1x=36 x÷8/3=12/1 8/5-x=16/5

5.4 32

3x5 / 3x9 / 5 = 9 / 10 3x - 3 / 5 = 2 / 5 x + 1 / 6 = 14 / 15

What are you doing? So complicated? Solving equations?
1. 3x / 5 × 5 / 9 = 9 / 10, divide left first
X / 3 = 9 / 10, multiply the left and right sides by 3, and remove the denominator
x=27/10
2、3x—3/5=2/5
3x = 1
X = 1 / 3 divided by the coefficient of the unknown
3、x+x/6=14/15
7x / 6 = 14 / 15 merge congeners
X = 14 / 15 × 6 / 7 coefficient of removing unknowns
X = 4 / 5

If (3x-5): (x-1 / 5) = 3:2, then x=

47/15

1-3 (x-1) is less than 4 (1-x), 3x-5 / 4-1 is less than x

From (1)
1-3x+3