Question

a)2(x+4)=36
b)3(2x+6)=48
c)5(x-3)+125
d)3x+2=x-7
e)4x-6=2x-30
f)6x+13=2x+9
g)7x+3=42

Answer 1

a=2x+8=36     => 2x=36-8   =>2x=28     =>x=28/2=14

b= 6x+18=48   =>6x=48-18  =>6x=30    =>x=30/6=5

c=5x-15+125   =>5x=-110    =>x=-110/5=-22

d=3x-x=-7-2     =>2x=-9        =>x=-9/2

e=4x-2x=-30=6 =>2x=-24     =>x=-24/2=-12

f=6x-2x=9-13   =>4x=-4        =>x=-4/4=-1

g=7x=42-3       =>7x=39       =>x=39/7

Answer 2

2(x+4)=36
2x+8=36
2x=36-8
2x=28
x=28/2
x=14

3(2x+6)=48
6x+18=48
6x=48-18
6x=30
x=30/6
x=5

5(x-3)=125
5x-15=125
5x=125+15
5x=140
x=140/5
x=28

3x+2=x-7
2x=-7-2
2x=-9
x=-9/2
x=-4,5

4x-6=2x-30
4x-2x=-30+6
2x=-30+6
2x=-24
x=-24/2
x=-12

6x+13=2x+9
6x-2x=9-13
4x=9-13
4x=-4
x=-4/4
x=-1

7x+3=42
7x=42-3
7x=39
x=39/7