Question

9x-20=7x+12 qaula e o resultado dessa equação do 1 grau

Answer 1

9x - 20 = 7x + 12

9x - 7x = 12 + 20

2x = 32

x = 32/2

x = 16

Answer 2

Olá,

9x - 20 = 7x + 12

9x − 20 − 7x = 7x + 12 − 7x

2x − 20 = 12

2x − 20 + 20 = 12 + 20

2x = 32

32/2

x = 16