Question

Solve the following equations mentally 1. 5 – x = 8 2. -1 = x – 2 3. -3x = 9 4. -10 = -5x

Answer 1

1. x= -3 ,2. x=1 , 3.x= -3 ,4.x=2

Answer 2

1. 5 – x = 8 , x = -3

2. -1 = x – 2 , x = 1

3. -3x = 9 , x = -3

4. -10 = -5x , x= 2

Explanation: