Question

com calculo pfvr

f) 2(x-1)+3(x+1)=4(x+2)

g) 2(x+1)+5(x-1)=7​

Answer 1

Explicação passo-a-passo:

f)

2.(x - 1) + 3.(x + 1) = 4.(x + 2)

2x - 2 + 3x + 3 = 4x + 8

5x + 1 = 4x + 8

5x - 4x = 8 - 1

x = 7

g)

2.(x + 1) + 5.(x - 1) = 7

2x + 2 + 5x - 5 = 7

7x - 3 = 7

7x = 7 + 3

7x = 10

x = 10/7