20n-19n=12-21

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Solution for 20n-19n=12-21 equation: 


Simplifying
20n + -19n = 12 + -21

Combine like terms: 20n + -19n = 1n
1n = 12 + -21

Combine like terms: 12 + -21 = -9
1n = -9

Solving
1n = -9

Solving for variable 'n'.

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

Divide each side by '1'.
n = -9

Simplifying
n = -9

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