Question

Resolver y verificar

A) 3.(x-1)=3

B)8.(x+6)=88

C)9.(x-2)=27

D)2.(x+2)+3.(x-1)=11

Answer 1

a) 3.(x-1)=3
3x-3=3
3x= 3+3
3x=6
x=6/3
x=2

b) 8.(x+6)=88
8x+48=88
8x=88-48
8x=40
x=40/8
x=5

c) 9.(x-2) = 27
9x - 18 = 27
9x=27+18
9x=45
x=45/9
x=5

d) 2.(x+2)+3.(x-1)=11
2x+4+3x-3=11
2x+3x= 11+3-4
5x= 14-4
5x=10
x=10/5
x=2