n+n-21=17

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Solution for n+n-21=17 equation:


Simplifying
n + n + -21 = 17

Reorder the terms:
-21 + n + n = 17

Combine like terms: n + n = 2n
-21 + 2n = 17

Solving
-21 + 2n = 17

Solving for variable 'n'.

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

Add '21' to each side of the equation.
-21 + 21 + 2n = 17 + 21

Combine like terms: -21 + 21 = 0
0 + 2n = 17 + 21
2n = 17 + 21

Combine like terms: 17 + 21 = 38
2n = 38

Divide each side by '2'.
n = 19

Simplifying
n = 19

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