Question

a) (54w+5)= 30w+53
b) (8+6y).2=36-58y
c) 9+2.(5x-4)=21
d) 10x+4.(3-2x)-6=8
e) 3.(5+3x)+5.(-x-1)=22

Answer 1

Olá Valente,
Como vai?
Vamos lá,

(A)

(54w + 5) = 30w + 53
54w - 30w = 53 - 5
24w = 48
w = 48 / 24
w = 2

(B)

(8 + 6y)·2 = 36 - 58y
16 + 12y = 36 - 58y
12y + 58y = 36 - 16
70y = 20
y = 20 / 70
y = 2 / 7

(C)

9 + 2·(5x - 4) = 21
9 + 10x - 8 = 21
10x = 21 - 1
x = 20 / 10
x = 2

(D)

10x + 4·(3 - 2x) - 6 = 8
10x + 12 - 8x - 6 = 8
10x - 8x = 8 - 6
2x = 2
x = 2 / 2
x = 1

(E)

3·(5 + 3x) + 5·(-x - 1) = 22
15 +9x - 5x - 5 = 22
4x = 22 - 10
x = 12 / 4
x = 3

Espero ter ajudado (:
Bons estudos!