Solve for f
f>15
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f-79+15>-32-17
Combine 2f and -f to get f.
f-64>-32-17
Add -79 and 15 to get -64.
f-64>-49
Subtract 17 from -32 to get -49.
f>-49+64
Add 64 to both sides.
f>15
Add -49 and 64 to get 15.
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