Question

Q.7 Find the ( value of the variable by systematic method :
a. 2x + 12 = 20​

Answer 1

Answer:

2x+12=20

2x=20-12

2x=6

x=6/2

x=3

Answer 2

Answer:

$Hello!$

$2x +12 = 20$ :-

2x +12  -12  = 20 -12       {subtracting 12 on both sides}

2x =  8

2x ÷ 2 = 8 ÷2              {dividing by 2 on both sides}

x = 4.