F+7=-21

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Solution for F+7=-21 equation: 


Simplifying
F + 7 = -21

Reorder the terms:
7 + F = -21

Solving
7 + F = -21

Solving for variable 'F'.

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

Add '-7' to each side of the equation.
7 + -7 + F = -21 + -7

Combine like terms: 7 + -7 = 0
0 + F = -21 + -7
F = -21 + -7

Combine like terms: -21 + -7 = -28
F = -28

Simplifying
F = -28

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