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t+42=t+t-34
We move all terms to the left:
t+42-(t+t-34)=0
We add all the numbers together, and all the variables
t-(2t-34)+42=0
We get rid of parentheses
t-2t+34+42=0
We add all the numbers together, and all the variables
-1t+76=0
We move all terms containing t to the left, all other terms to the right
-t=-76
t=-76/-1
t=+76
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