20f+8+f=20f-7

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Solution for 20f+8+f=20f-7 equation: 



20f+8+f=20f-7

We move all terms to the left:

20f+8+f-(20f-7)=0

We add all the numbers together, and all the variables

21f-(20f-7)+8=0

We get rid of parentheses

21f-20f+7+8=0

We add all the numbers together, and all the variables

f+15=0

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

f=-15

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