Question

Solve and Check the solution in the following equation
1. X + 7 = 9
2. X/4 = 25
3. 9y = - 135
4. 15 - X = 4
5. 3 (x - 3) = 15
6. 7y + 3 = 9​

Answer 1

Answer:

1. x + 7 = 9

→ x = 9 - 7

→ x = 2

2. x/4 = 25

→x = 25×4

→ x = 100

3. 9y = -135

→ y = -135/9

→ y = -15

4. 15 - x = 4

→ - x = 4 - 15

→ - x = - 11

→ 11 = x

5. 3 (x - 3) = 15

→ 3x - 9 = 15

→ 3x = 15+9

→ 3x = 24

→ x = 24/3 = 8

6. 7y + 3 = 9

→ 7y = 9-3

→ 7y = 6

→ y = 6/7