3(f-8)=-42

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Solution for 3(f-8)=-42 equation: 


Simplifying
3(f + -8) = -42

Reorder the terms:
3(-8 + f) = -42
(-8 * 3 + f * 3) = -42
(-24 + 3f) = -42

Solving
-24 + 3f = -42

Solving for variable 'f'.

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

Add '24' to each side of the equation.
-24 + 24 + 3f = -42 + 24

Combine like terms: -24 + 24 = 0
0 + 3f = -42 + 24
3f = -42 + 24

Combine like terms: -42 + 24 = -18
3f = -18

Divide each side by '3'.
f = -6

Simplifying
f = -6

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