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-40=-16t^
We move all terms to the left:
-40-(-16t^)=0
We get rid of parentheses
16t^-40=0
We add all the numbers together, and all the variables
16t-40=0
We move all terms containing t to the left, all other terms to the right
16t=40
t=40/16
t=2+1/2
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