Question

alguém pfvr pode ajudar?

Answer 1

a) x - 5 = 15

x = 15 + 5

x = 20

b) 1x - 4 = 2 - 2x

x + 2x = 2 + 4

3x = 6

x = $\frac{6}{3}$

x = 2

c) 1x + 8 = 15 - 2x

x + 2x = 15 - 8

3x = 7

x = $\frac{7}{3}$

d) x - 10 = 5

x = 5+10

x = 15

e) 14x - 4 = 2 - 4x

14x + 4x = 2 + 4

18x = 6

x = $\frac{6}{18}$

x = $\frac{1}{3}$

f) x + 3 = 1 - 2x

x + 2x = 1 - 3

3x = -2

x = $-\frac{2}{3}$