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fgiga [73]
3 years ago
8

2x + 7 = 21 x= what is x

Physics
2 answers:
navik [9.2K]3 years ago
8 0
<h3>Given:</h3>

2x + 7 = 21

<h3 /><h3>To Find:</h3>

The value of x.

<h3>Solution:</h3>

2x + 7 = 21

or, 2x = 21 - 7

or, x = 14/2

or, x = 7

<h2>Answer:</h2>

The value of x is 7.

<h3>To Check:</h3>

2(7) + 7 = 21

or, 14 + 7 = 21

or, 21 = 21

LHS = RHS

Hence, Proved.

Alex787 [66]3 years ago
5 0
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
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