Question

Alguém sabe ??????
por favor??​

Answer 1

Resposta:

a)8x=20-100

x=-80/8

x= - 10

c)15x=90

x=90/15

x=6

g)30=5x-15

30+15=5x

5x=45

x=45/5

x=9

e)10x-4=6x+8

10x-6x=8+4

2x=12

x=12/2

x= 6