Question

A) 2(x - 6) = -3(5 + x) =
B) 3(x + 10) - (2x - 5) = 0
C)3(x - 1) - (2x - 4) = 1
D)7(x - 1) - 2(x - 5) = x-5​

Answer 1

Explicação passo-a-passo:

A) 2(x - 6) = -3(5 + x)

• 2.(x) +2.(-6) = -3.(5) -3.(x)

• 2x -12 = -15 -3x

• 2x+3x = -15 +12

• 5x = -3

• x = -3/5*

B) 3(x + 10) - (2x - 5) = 0

> 3.(x) +3.(10) : 3x+30

> -(2x - 5) : -2x +5

• 3x +30 -2x + 5 = 0

• 3x -2x = -5-30

• x = -35*

C)3(x - 1) - (2x - 4) = 1

> 3.(x) +3.(-1) : 3x -3

> -(2x -4) : -2x +4

• 3x -3 -2x +4 = 1

• 3x -2x = 1+3-4

• x = 4-4

• x = 0*

D)7(x - 1) - 2(x - 5) = x-5

> 7.(x) +7.(-1) : 7x -7

> -2.(x) -2.(-5) : -2x+10

• 7x-7-2x+10 = x-5

• 7x -2x -x = -5+7-10

• 7x -3x = 2-10

• 4x = -8

• x = -8/4

• x = -2*

Espero ter ajudado...obgd...

Answer 2

a resolução esta na foto