4(f-9)=-8

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Solution for 4(f-9)=-8 equation: 


Simplifying
4(f + -9) = -8

Reorder the terms:
4(-9 + f) = -8
(-9 * 4 + f * 4) = -8
(-36 + 4f) = -8

Solving
-36 + 4f = -8

Solving for variable 'f'.

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

Add '36' to each side of the equation.
-36 + 36 + 4f = -8 + 36

Combine like terms: -36 + 36 = 0
0 + 4f = -8 + 36
4f = -8 + 36

Combine like terms: -8 + 36 = 28
4f = 28

Divide each side by '4'.
f = 7

Simplifying
f = 7

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