Question

calcule as equações:

a) 7(x-2)=5(x+3)

b) 2(x-5)+4 (x-1)=0

??​

Answer 1

Resposta:

a) 7(x -2) = 5(x + 3)

7x - 14 = 5x + 15

7x - 5x = 15 + 14

2x= 29

x = 29 ÷ 2

x = 14,5

b) 2(x - 5) + 4(x - 1) = 0

2x - 10 + 4x - 4 = 0

6x - 14 = 0

6x = 14

x = 14 ÷ 6

$x = \frac{7}{3}$