8f+7=7f-400

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Solution for 8f+7=7f-400 equation: 



8f+7=7f-400

We move all terms to the left:

8f+7-(7f-400)=0

We get rid of parentheses

8f-7f+400+7=0

We add all the numbers together, and all the variables

f+407=0

We move all terms containing f to the left, all other terms to the right

f=-407

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