Question

me ajude por favorrr​

Answer 1

Resposta:

Explicação passo-a-passo:

a) -4x+8=0, logo -4x=-8 *(-1) \ 4x=8 \ x=8/4 \ x=2

b) -3x-21=0, logo x= -7

c) 2-8x=0, logo x=4

d) 7-x=0, logo x= 7

e) -4x-64=0, logo x= -16

f) -6x+18=0, logo x= 3

g) 3x-9=0, logo x=3

h) 4x-20=0, logo x= 5