Question

Resolva as equaçoes a seguir

5(2x-4) = 4(x-2)

b) 5x+10 (1+x) = 5

c) 5(3-x) +2 (x+1) =x+5

Answer 1

A) 5(2x-4)=4(x-2)

10x-20=4x-8
10x-4x=-8+20
6x=12
X=12/6
X=2
_______________
B) 5x+10(1+x)=5

5x+10+10x=5
15x=5-10
15x=-5
X=-5/15
X=-1/3
______________
C) 5(3-x)+2(x+1)=x+5

15-5x+2x+2=x+5
-3x+17=x+5
-3x-x=5-17
-4x=12/.(-1)
4x=12
X=12/4
X=3

Espero ter ajudado!