A) 7x + 5 - 2x = 8 + 4x - 2b) 9x - 10 - 5x + 12 = x + 6 - 3x + 10c) 7 - 3 (x + 1) = x - 3 ( x - 1 )d) 5 - (2x + 1 ) = 9 - ( 2 + 3x)e) 5x - 2(x - 6) = 2x + 2 ( x - 1)f) 3x + 1 - (x + 3) = (x + 1)Si pue?

A) 7x + 5 - 2x = 8 + 4x - 2 5x + 5 = 4x + 6

5x = 4x + 1

1x = 1

x = 1

b)9x - 10 - 5x + 12 = x + 6 - 3x + 10

4x + 2 = - 2x + 16

4x = - 2x + 14

6x = 14

x = 7 / 3

2.

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c)7 - 3(x + 1) = x - 3(x - 1) - 3 - 3 + 7 = x + - 3x + 3 - 3x + 4 = - 2x + 3 - 3 = - 2x - 1 - 1x = - 1

x = 1

d)5 - (2x + 1) = 9 - (2 + 3x) - 2x - 1 + 5 = - (3x + 2) + 9 - 2x + 4 = - - 3x - 2 + 9 - 2x + 4 = - 3x + 7 - 2x = - 3x + 3

1x = 3

x = 3

e)5x - 2(x - 6) = 2x + 2(x - 1)

5x + - 2x + 12 = 2x + 2x - 2

3x + 12 = 4 - 2

3x = 4x - 14 - 1x = - 14

x = 14

f)3x + 1(x + 3) = (x + 1)

3x + - x - 3 + 1 = (x + 1)

2x - 2 = (x + 1)

2x - 2 = x + 1

2x = x + 3

1x = 3

x = 3.