-1(f+20)=7

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Solution for -1(f+20)=7 equation: 


Simplifying
-1(f + 20) = 7

Reorder the terms:
-1(20 + f) = 7
(20 * -1 + f * -1) = 7
(-20 + -1f) = 7

Solving
-20 + -1f = 7

Solving for variable 'f'.

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

Add '20' to each side of the equation.
-20 + 20 + -1f = 7 + 20

Combine like terms: -20 + 20 = 0
0 + -1f = 7 + 20
-1f = 7 + 20

Combine like terms: 7 + 20 = 27
-1f = 27

Divide each side by '-1'.
f = -27

Simplifying
f = -27

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