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18=2.4+21.32t
We move all terms to the left:
18-(2.4+21.32t)=0
We add all the numbers together, and all the variables
-(21.32t+2.4)+18=0
We get rid of parentheses
-21.32t-2.4+18=0
We add all the numbers together, and all the variables
-21.32t+15.6=0
We move all terms containing t to the left, all other terms to the right
-21.32t=-15.6
t=-15.6/-21.32
t=4.33333333333/5.92222222222
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