-4f+21=5

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Solution for -4f+21=5 equation:



-4f+21=5
We move all terms to the left:
-4f+21-(5)=0
We add all the numbers together, and all the variables
-4f+16=0
We move all terms containing f to the left, all other terms to the right
-4f=-16
f=-16/-4
f=+4

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