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0=15+9.8t
We move all terms to the left:
0-(15+9.8t)=0
We add all the numbers together, and all the variables
-(9.8t+15)+0=0
We add all the numbers together, and all the variables
-(9.8t+15)=0
We get rid of parentheses
-9.8t-15=0
We move all terms containing t to the left, all other terms to the right
-9.8t=15
t=15/-9.8
t=-1+4.33333333333/8.16666666667
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