5f-6=-21

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Solution for 5f-6=-21 equation:



5f-6=-21
We move all terms to the left:
5f-6-(-21)=0
We add all the numbers together, and all the variables
5f+15=0
We move all terms containing f to the left, all other terms to the right
5f=-15
f=-15/5
f=-3

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