Question

2( x + 1 ) - 3(6 - 2x)= 20
4(x + 1) = 12
x + 2(x+3) = 60
2(x - 2) + 2x + 2 = - 5(x - 2)
4(x + 2) + 6(x +3)

Answer 1

Resposta:

Explicação passo a passo:

1)

2( x + 1 ) - 3(6 - 2x)= 20

2x + 2 - 18 + 6x = 20

8x = 20 +16

8x = 36

x = 36/8 = 9/2 ou 4,5

2)

4(x + 1) = 12

4x + 4 = 12

4x = 12 -  4

4x = 8

x= 8/4

x = 2

3)

x + 2(x+3) = 60

x + 2x + 6 = 60

3x = 60 - 6

3x = 54

x = 54/3

x = 18

4)

2(x - 2) + 2x + 2 = - 5(x - 2)

2x - 4 + 2x + 2 = -5x + 10

4x + 5x = 10 +2

9x = 12

x = 12/9 = 4/3 ou 1,333...

5)

4(x + 2) + 6(x +3)

4x + 8 + 6x + 18

10x = -26

x = -26/10

x = -2,6

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