Question

resolva as equacoes do 1° grau;

a) 15x + 80 = 9x - 40

b) 4 (x + 3) = 2 (x + 6)

c) 3x + 3 = x + 2
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2 3

MIM AJUDEMM....POR FAVORRR!!!!​

Answer 1

a) 15x - 9x = -40 -80

6x = -120

x = -120 ÷ 6

× = - 20

b) 4x + 12 = 2x + 12

2x = 0

x = 0 ÷ 2

x = 0

c) 2x = -1

x = -2