Question

resolvar as equaçoes abaixo:

a)10x + 16 = 14x +8

b) 2(x -3) = - 3 (x - 3)

c) 4(5x -3) - 64(3-x) - 3 (12x -4) =96

d) 5(x + 1) + 6(x + 2) = 9(x + 3)

Answer 1

A) 10X + 16 = 14X + 8

10X - 14X = 8 - 16

-4X = -8

X = 2

B) 2 (X - 3) = -3(X - 3)

2 (X - 3) + 3(X - 3) = 0

(2 + 3) . (X - 3) = 0

5(X - 3) = 0

X - 3 = 0

X = 3

C) 4(5X - 3) - 64(3 - X) - 3 (12X - 4) = 96

20X - 12 - 192 + 64X - 36X + 12 = 96

48X - 192 = 96

48X = 196 + 192

48X= 288

X = 6

D) 5(X + 1) + 6(X + 2) = 9(X + 3)

5X + 5 + 6X + 12 = 9X + 27

11X + 17 = 9X + 27

11X - 9X = 27 - 17

2X = 10

X =5

(Ajuda aí marcando melhor resposta, deu trabalho!)