Question

contas armadas

CONT

1)resolva as equaçoes

E)4x-1=3(x-1)

F)3(x-2)=2x-4

G)2(x-1)=3x+4

H)3(x-1)-7=15

I)7(x-4)=2x-3

Answer 1

E)4x-1=3(x-1)
4x-1=3x-3
4x-3x=-3+1
X=-2

F)3(x-2)=2x-4
3x-6=2x-5
3x-2x=-5+6
X=1

G)2(x-1)=3x+4
2x-2=3x+4
2x-3x=-2+4
-x = 2
X= -2

H)3(x-1)-7=15
3x-3-7=15
3x=15+7+3
3x=25
X=25/3

I)7(x-4)=2x-3
7x-28=2x-3
7x-2x=-3+28
5x=25
X=5