n-(-21)=100

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Solution for n-(-21)=100 equation: 


Simplifying
n + -1(-21) = 100

Multiply -1 * -21
n + 21 = 100

Reorder the terms:
21 + n = 100

Solving
21 + n = 100

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 + n = 100 + -21

Combine like terms: 21 + -21 = 0
0 + n = 100 + -21
n = 100 + -21

Combine like terms: 100 + -21 = 79
n = 79

Simplifying
n = 79

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