Question

1) arme a conta e resolva

A)3(x-2)=2x-4
R)

B)2(x-1)=3x+4
R)

C)3(x-1)-7=15
R)

D)7(x-4)=2x-5
R)

Answer 1

a)3(×-2)=2×-4
3×-6=2×-4
3×-2×=-4+6
x=2
b)2(×-1)=3×+4
2×-2=3×+4
2×-3×=4+2
-×=6 .(-1)
x=-6
c)3(×-1)-7=15
3×-3-7=15
3×=15+7+3
3×=25
×=25/3
d)7(×-4)=2×-5
7×-28=2×-5
7×-2×=-5+28
5×=23
×=23/5
Espero ter ajudado

Answer 2

3(x-2)=2x-4
3x-6=2x-4
3x-2x=6-4
x = 2

2(x-1)=3x+4
2x-2=3x+4
-2-4=3x-2x
-6=z

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

7(x-4)=2x-5
7x-28=2x-5
7x-2x=28-5
5x=23
x=23/5