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0=-16t^+72t+4
We move all terms to the left:
0-(-16t^+72t+4)=0
We add all the numbers together, and all the variables
-(-16t^+72t+4)=0
We get rid of parentheses
16t^-72t-4=0
We add all the numbers together, and all the variables
-56t-4=0
We move all terms containing t to the left, all other terms to the right
-56t=4
t=4/-56
t=-1/14
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