Solve for F
F=34
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2F+10=78
Combine F and F to get 2F.
2F=78-10
Subtract 10 from both sides.
2F=68
Subtract 10 from 78 to get 68.
F=\frac{68}{2}
Divide both sides by 2.
F=34
Divide 68 by 2 to get 34.
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