10n-7=8n+21

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Solution for 10n-7=8n+21 equation:


Simplifying
10n + -7 = 8n + 21

Reorder the terms:
-7 + 10n = 8n + 21

Reorder the terms:
-7 + 10n = 21 + 8n

Solving
-7 + 10n = 21 + 8n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-8n' to each side of the equation.
-7 + 10n + -8n = 21 + 8n + -8n

Combine like terms: 10n + -8n = 2n
-7 + 2n = 21 + 8n + -8n

Combine like terms: 8n + -8n = 0
-7 + 2n = 21 + 0
-7 + 2n = 21

Add '7' to each side of the equation.
-7 + 7 + 2n = 21 + 7

Combine like terms: -7 + 7 = 0
0 + 2n = 21 + 7
2n = 21 + 7

Combine like terms: 21 + 7 = 28
2n = 28

Divide each side by '2'.
n = 14

Simplifying
n = 14

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