6f-12+20f=-4-8(-5f+15)

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Solution for 6f-12+20f=-4-8(-5f+15) equation: 



6f-12+20f=-4-8(-5f+15)

We move all terms to the left:

6f-12+20f-(-4-8(-5f+15))=0

We add all the numbers together, and all the variables

26f-(-4-8(-5f+15))-12=0



We calculate terms in parentheses: -(-4-8(-5f+15)), so:

-4-8(-5f+15)

determiningTheFunctionDomain
-8(-5f+15)-4

We multiply parentheses

40f-120-4

We add all the numbers together, and all the variables

40f-124

Back to the equation:

-(40f-124)



We get rid of parentheses

26f-40f+124-12=0

We add all the numbers together, and all the variables

-14f+112=0

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

-14f=-112

f=-112/-14

f=+8

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