3f+7+4f-15=90

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Solution for 3f+7+4f-15=90 equation:


Simplifying
3f + 7 + 4f + -15 = 90

Reorder the terms:
7 + -15 + 3f + 4f = 90

Combine like terms: 7 + -15 = -8
-8 + 3f + 4f = 90

Combine like terms: 3f + 4f = 7f
-8 + 7f = 90

Solving
-8 + 7f = 90

Solving for variable 'f'.

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

Add '8' to each side of the equation.
-8 + 8 + 7f = 90 + 8

Combine like terms: -8 + 8 = 0
0 + 7f = 90 + 8
7f = 90 + 8

Combine like terms: 90 + 8 = 98
7f = 98

Divide each side by '7'.
f = 14

Simplifying
f = 14

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