Question

Find x for each of the problems;

1) 2x+5=12+x
2)5x=30+3x
3)2+x/3=7
4)15-x=17-2x
5)6x= -42-x
6)36-4x=26-3x
7) -2+x=15

Answer 1

1) x = 7

2) x = 15

3) x = 19

4) x = 2

5) x = - 6

6) x = 10

7) x = 17

Explanation:

1) 2x + 5= 12 +x

-x -x

2x -x + 5 = 12

-5 -5

x = 7

2) 5x = 30 + 3x

-3x -3x

2x = 30

x = 15

3) 2 + x/3 = 7

3(2 + x/3) = (7) 3

2 + x = 21

-2 -2

x = 19

4) 15 - x = 17 - 2x

+2x +2x

15 - x + 2x = 17

-15 -15

x = 2

5) 6x = - 42 - x

+x +x

7x = -42

x = - 6

6) 36 - 4x = 26 - 3x

+3x +3x

36 - x = 26

-36 -36

-x = -10

x = 10

7) -2 + x = 15

+2 +2

x = 17

hope this helps!