Question

alguem pode mim ajuda​

Answer 1

a) x+5 = 12

x = 12-5

x = 7

b) -2a = 6

2a = -6

a = $\frac{-6}{2}$ = -3

c) x² = 64

x = $\sqrt{64}$ = 8

d) y + 8 = 5

y = 5 - 8

y = -3

e) $\frac{b}{5}$ = -4

b = -4 × 5

b = -20

f) 2x = -3

x = $\frac{-3}{2}$ = -1,5