Question

2) Resolva as seguintes equações de 1° Grau: a) x + 6 = 9 b) X-5 = 8 c) x + 12 = 20 d) x-7 = 3 e) 6x = 2x + 18 f) 2x - 4 = x + 1 g) 3(x - 1) = 2x - 4 = h) 2(x + 2) = 3x + 4 i) 3(x + 2) = 2x + 4 j) 2(x - 2) = 3x + 4
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Answer 1

Resposta:

a) x+6=9

<=> x=-6+9

<=> x=3

b) x-5=8

<=>x=5+8

<=>x=13

c)x + 12=20

<=>x=-12+20

<=>x=8

d) x-7=3

<=> x=7+3

<=> x=10