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-36=13.5t-0.5*9.8t^2
We move all terms to the left:
-36-(13.5t-0.5*9.8t^2)=0
We get rid of parentheses
-13.5t+0.5*9.8t^2-36=0
We move all terms containing t to the left, all other terms to the right
-13.5t+0.5*9.8t^2=36
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