Question

3. Solve the following equations:
a. 2x + 5 = 21
b. 2r -0.3 = 0.9
c. 5.r + 15 = 20
d. 3x + 1 = 25
e. 3.x + 4 = 2x + 8 f. 2x - 2 = 3x + 7
g. 5x -5 = 3x +9 h. 7x - 24 = 6x + 29
please help me to get my answer​

Answer 1

Step-by-step explanation:

a.2x+5 =21

2x = 21-5{as the sign changes as we move them from on side to another}

so,

2x = 16

x= 16÷2 ( similarly to first one reason)

x= 8

Ans.