T(N)=3n+7-n=3

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Solution for T(N)=3n+7-n=3 equation: 



()=3T+7-T=3

We move all terms to the left:

()-(3T+7-T)=0

We add all the numbers together, and all the variables

-(2T+7)+()=0

We add all the numbers together, and all the variables

-(2T+7)=0

We get rid of parentheses

-2T-7=0

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

-2T=7

T=7/-2

T=-3+1/2

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