1+7n+6=21

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Solution for 1+7n+6=21 equation: 


Simplifying
1 + 7n + 6 = 21

Reorder the terms:
1 + 6 + 7n = 21

Combine like terms: 1 + 6 = 7
7 + 7n = 21

Solving
7 + 7n = 21

Solving for variable 'n'.

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

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

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

Combine like terms: 21 + -7 = 14
7n = 14

Divide each side by '7'.
n = 2

Simplifying
n = 2

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