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67.50=15t+30
We move all terms to the left:
67.50-(15t+30)=0
We add all the numbers together, and all the variables
-(15t+30)+67.5=0
We get rid of parentheses
-15t-30+67.5=0
We add all the numbers together, and all the variables
-15t+37.5=0
We move all terms containing t to the left, all other terms to the right
-15t=-37.5
t=-37.5/-15
t=2+5/10
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