Question

quanto é 5-x-20=5x-10-7x​

Answer 1

Resposta:

5-x-20=5x-10-7x

-x+7x-5x=20-5-10

7x-6x=20-15

x=5

Answer 2

Explicação passo-a-passo:

5-x-20=5x-10-7x

-x+5-20=5x-7x-10

-x-15=-2x-10

-x+2x=-10+15

x= 5

Verificando :

5-x-20=5x-10-7x

5-5-20=5.(5)-10-7.(5)

-20=25-10-35

-20=15-35

-20=-20

Ok!

Espero ter ajudado!