7n-21-3n+-15=10

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Solution for 7n-21-3n+-15=10 equation:


Simplifying
7n + -21 + -3n + -15 = 10

Reorder the terms:
-21 + -15 + 7n + -3n = 10

Combine like terms: -21 + -15 = -36
-36 + 7n + -3n = 10

Combine like terms: 7n + -3n = 4n
-36 + 4n = 10

Solving
-36 + 4n = 10

Solving for variable 'n'.

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

Add '36' to each side of the equation.
-36 + 36 + 4n = 10 + 36

Combine like terms: -36 + 36 = 0
0 + 4n = 10 + 36
4n = 10 + 36

Combine like terms: 10 + 36 = 46
4n = 46

Divide each side by '4'.
n = 11.5

Simplifying
n = 11.5

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