87=168-f

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Solution for 87=168-f equation:


Simplifying
87 = 168 + -1f

Solving
87 = 168 + -1f

Solving for variable 'f'.

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

Add 'f' to each side of the equation.
87 + f = 168 + -1f + f

Combine like terms: -1f + f = 0
87 + f = 168 + 0
87 + f = 168

Add '-87' to each side of the equation.
87 + -87 + f = 168 + -87

Combine like terms: 87 + -87 = 0
0 + f = 168 + -87
f = 168 + -87

Combine like terms: 168 + -87 = 81
f = 81

Simplifying
f = 81

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