21-(-15f)=96

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Solution for 21-(-15f)=96 equation: 


Simplifying
21 + -1(-15f) = 96

Remove parenthesis around (-15f)
21 + -1 * -15f = 96

Multiply -1 * -15
21 + 15f = 96

Solving
21 + 15f = 96

Solving for variable 'f'.

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

Add '-21' to each side of the equation.
21 + -21 + 15f = 96 + -21

Combine like terms: 21 + -21 = 0
0 + 15f = 96 + -21
15f = 96 + -21

Combine like terms: 96 + -21 = 75
15f = 75

Divide each side by '15'.
f = 5

Simplifying
f = 5

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