4f+5f=63

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Solution for 4f+5f=63 equation:



4f+5f=63
We move all terms to the left:
4f+5f-(63)=0
We add all the numbers together, and all the variables
9f-63=0
We move all terms containing f to the left, all other terms to the right
9f=63
f=63/9
f=7

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