Question

2x + 7 = 21 x= what is x

Answer 1

X is 7.
Step by step:
1. minus 7 from both sides. Now you have 2x=14.
2. Divide both sides with 2. You get x=7

Answer 2

Given:

2x + 7 = 21

To Find:

The value of x.

Solution:

2x + 7 = 21

or, 2x = 21 - 7

or, x = 14/2

or, x = 7

Answer:

The value of x is 7.

To Check:

2(7) + 7 = 21

or, 14 + 7 = 21

or, 21 = 21

LHS = RHS

Hence, Proved.