Question

resolva as equações 9×-6= -3+12 2×-8= -6×+7 5×+4=4×-9​

Answer 1

Resposta:

a) 9x - 6 = - 3 + 12

9x = - 3 + 12 + 6

9x = - 3 + 18

9x = 15

$x = \frac{15}{9}$

simplificando por 3

$x = \frac{5}{3}$

b) 2x - 8 = - 6x + 7

2x + 6x = 7 + 8

8x = 15

$x = \frac{15}{8}$

c) 5x + 4 = 4x - 9

5x - 4x = - 9 - 4

x = - 13