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31t-30=15t+6
We move all terms to the left:
31t-30-(15t+6)=0
We get rid of parentheses
31t-15t-6-30=0
We add all the numbers together, and all the variables
16t-36=0
We move all terms containing t to the left, all other terms to the right
16t=36
t=36/16
t=2+1/4
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