-15+7t=20+2t

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Solution for -15+7t=20+2t equation: 



-15+7t=20+2t

We move all terms to the left:

-15+7t-(20+2t)=0

We add all the numbers together, and all the variables

7t-(2t+20)-15=0

We get rid of parentheses

7t-2t-20-15=0

We add all the numbers together, and all the variables

5t-35=0

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

5t=35

t=35/5

t=7

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