13n-12n-21=17

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Solution for 13n-12n-21=17 equation:


Simplifying
13n + -12n + -21 = 17

Reorder the terms:
-21 + 13n + -12n = 17

Combine like terms: 13n + -12n = 1n
-21 + 1n = 17

Solving
-21 + 1n = 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 + 1n = 17 + 21

Combine like terms: -21 + 21 = 0
0 + 1n = 17 + 21
1n = 17 + 21

Combine like terms: 17 + 21 = 38
1n = 38

Divide each side by '1'.
n = 38

Simplifying
n = 38

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