-6(4f-20)+15=-9f

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Solution for -6(4f-20)+15=-9f equation:


Simplifying
-6(4f + -20) + 15 = -9f

Reorder the terms:
-6(-20 + 4f) + 15 = -9f
(-20 * -6 + 4f * -6) + 15 = -9f
(120 + -24f) + 15 = -9f

Reorder the terms:
120 + 15 + -24f = -9f

Combine like terms: 120 + 15 = 135
135 + -24f = -9f

Solving
135 + -24f = -9f

Solving for variable 'f'.

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

Add '9f' to each side of the equation.
135 + -24f + 9f = -9f + 9f

Combine like terms: -24f + 9f = -15f
135 + -15f = -9f + 9f

Combine like terms: -9f + 9f = 0
135 + -15f = 0

Add '-135' to each side of the equation.
135 + -135 + -15f = 0 + -135

Combine like terms: 135 + -135 = 0
0 + -15f = 0 + -135
-15f = 0 + -135

Combine like terms: 0 + -135 = -135
-15f = -135

Divide each side by '-15'.
f = 9

Simplifying
f = 9

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