Question

resolva as equaçoes :
A)
9x - 7 = x + 13


B)
16x - 8 = 8x - 10

Answer 1

A) 8x= 20

X=20/8

Ou

X= 10/4

B)8x = -2

X = -2/8

Answer 2

a) 9x - 7 = x + 13
9x = x + 13 + 7
9x - x = 13 + 7
8x = 20
x = 20 ÷ 8
x = 2.5

b) 16x - 8 = 8x - 10
16x = 8x - 10 + 8
16x - 8x = 10 + 8
8x = 2
x = 2 ÷ 8
x = 0.25