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28.2687=-17+9.81t
We move all terms to the left:
28.2687-(-17+9.81t)=0
We add all the numbers together, and all the variables
-(9.81t-17)+28.2687=0
We get rid of parentheses
-9.81t+17+28.2687=0
We add all the numbers together, and all the variables
-9.81t+45.2687=0
We move all terms containing t to the left, all other terms to the right
-9.81t=-45.2687
t=-45.2687/-9.81
t=4+1.9905239871892/3.2390134381088
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