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4=t+11.5+t
We move all terms to the left:
4-(t+11.5+t)=0
We add all the numbers together, and all the variables
-(2t+11.5)+4=0
We get rid of parentheses
-2t-11.5+4=0
We add all the numbers together, and all the variables
-2t-7.5=0
We move all terms containing t to the left, all other terms to the right
-2t=7.5
t=7.5/-2
t=-3+1/1.3333333333333
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