4(2f+1)+9=45

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Solution for 4(2f+1)+9=45 equation: 



4(2f+1)+9=45

We move all terms to the left:

4(2f+1)+9-(45)=0

We add all the numbers together, and all the variables

4(2f+1)-36=0

We multiply parentheses

8f+4-36=0

We add all the numbers together, and all the variables

8f-32=0

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

8f=32

f=32/8

f=4

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