Question

A) 2x-5+3x=x+80
B) 2(x+10)=3.(x+30)
C) -5.(-2x-10)=5(x-40)
Equação do 1 grau

Answer 1

Resposta:

A)

2x-5+3x=x+80

2x+3x-x=80+5

4x=85

x=85/4

B)

2(x+10)=3.(x+30)

2x+20=3x+90

2x-3x=90-20

-x=70

x=-70

C)

-5.(-2x-10)=5(x-40)

10x+50=5x-200

10x-5x=-200-50

5x=-250

x=-250/5

x=-50