3f+7=f-15

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Solution for 3f+7=f-15 equation:


Simplifying
3f + 7 = f + -15

Reorder the terms:
7 + 3f = f + -15

Reorder the terms:
7 + 3f = -15 + f

Solving
7 + 3f = -15 + f

Solving for variable 'f'.

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

Add '-1f' to each side of the equation.
7 + 3f + -1f = -15 + f + -1f

Combine like terms: 3f + -1f = 2f
7 + 2f = -15 + f + -1f

Combine like terms: f + -1f = 0
7 + 2f = -15 + 0
7 + 2f = -15

Add '-7' to each side of the equation.
7 + -7 + 2f = -15 + -7

Combine like terms: 7 + -7 = 0
0 + 2f = -15 + -7
2f = -15 + -7

Combine like terms: -15 + -7 = -22
2f = -22

Divide each side by '2'.
f = -11

Simplifying
f = -11

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