Question

Resolva as equações:
A) 4 . (2x + 5) = 180
B) x + 3 . (2x + 2) = 51

Answer 1

Resposta:

A)x=20 , B)x=45/7

Explicação passo a passo:

A)

4(2x+5)=180

8x+20=180

8x=180-20

8x=160

x=160/8

x=20

B)

x+3(2x+2)=51

x+6x+6=51

7x=51-6

7x=45

x=45/7