5n+6=7n+21

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Solution for 5n+6=7n+21 equation:


Simplifying
5n + 6 = 7n + 21

Reorder the terms:
6 + 5n = 7n + 21

Reorder the terms:
6 + 5n = 21 + 7n

Solving
6 + 5n = 21 + 7n

Solving for variable 'n'.

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

Add '-7n' to each side of the equation.
6 + 5n + -7n = 21 + 7n + -7n

Combine like terms: 5n + -7n = -2n
6 + -2n = 21 + 7n + -7n

Combine like terms: 7n + -7n = 0
6 + -2n = 21 + 0
6 + -2n = 21

Add '-6' to each side of the equation.
6 + -6 + -2n = 21 + -6

Combine like terms: 6 + -6 = 0
0 + -2n = 21 + -6
-2n = 21 + -6

Combine like terms: 21 + -6 = 15
-2n = 15

Divide each side by '-2'.
n = -7.5

Simplifying
n = -7.5

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