n-(-4)=-21

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Solution for n-(-4)=-21 equation: 


Simplifying
n + -1(-4) = -21

Multiply -1 * -4
n + 4 = -21

Reorder the terms:
4 + n = -21

Solving
4 + n = -21

Solving for variable 'n'.

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

Add '-4' to each side of the equation.
4 + -4 + n = -21 + -4

Combine like terms: 4 + -4 = 0
0 + n = -21 + -4
n = -21 + -4

Combine like terms: -21 + -4 = -25
n = -25

Simplifying
n = -25

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