Question

Resolva as equações de 1 grau e encontre o valor de a, b e x

Answer 1

Resposta:

A) -2.(2x+5)=2.(4-1x)

-4x-10=8-2x

-4x+2x=8+10

-2x=18

x=18/-2

x= -9

B) 4-6x=20

4-20=6x

-16=6x

-16/6=x

x= -2,6

C) 4x+13=3x+5

4x-3x=5-13

x= -8