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-2(2t+1)=-40
We move all terms to the left:
-2(2t+1)-(-40)=0
We add all the numbers together, and all the variables
-2(2t+1)+40=0
We multiply parentheses
-4t-2+40=0
We add all the numbers together, and all the variables
-4t+38=0
We move all terms containing t to the left, all other terms to the right
-4t=-38
t=-38/-4
t=9+1/2
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