Question

Find out which operation must be done on both sides of these equations in order to solve them.
1 ) x + 9 = 11
2) x - 4 = 9
3) 8 x = 24
4) x / 6 = 3 ​

Answer 1

Step-by-step explanation:

1)x+9=11

x+9-9=11-9

x=2

2)x-4=9

x-4+4=9+4

x=13

3)8x=24

8x/8=24/8

x=3

4)x/6=3

x/6×6=3×6

x=18

Answer 2

Answer:

1) subtract 9 from both the sides

2) add 4 to both the sides

3) divide both sides by 8

4) multiply both sides by 6

Step-by-step explanation:

1) x + 9 = 11

> x + 9 - 9 = 11 - 9

> x = 2

2) x - 4 = 9

> x - 4 + 4 = 9 + 4

> x = 13

3) 8 x = 24

> 8 x/8 = 24/8

> x = 3

4)  x / 6 = 3

> x / 6 * 6 = 3 * 6

> x = 18