Question

resolva as equações do primeiro grau ​

Answer 1

Resposta:

f) 6x + 9 = 4x + 9 → 6x = 4x → 2x = 0 → x = 0

g) 5x - 5 = 8x + 2 → 3x = -7 → x = -7/3

h) 8x - 40 = 5x + 80 → 3x = 120 → x = 40

i) 3x - 3 = x + 11 → 2x = 14 → x = 7

j) 2x - 6 = -5x - 20 → 7x = -14 → x = -2