Question

2.(5x+5)+7.(5x-5)=-25

Answer 1

Vamos lá

Resolução:

2 ( 5X + 5 ) + 7 ( 5X - 5 ) = - 25

10X + 10 + 35X - 35 = - 25

10X + 35X = - 25 - 10 + 35

10X + 35X = - 35X + 35

45X = 0

X = 45 / 0

X = 0

S { 0 }

RESPOSTA:

S { 0 }