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3=-3(2t+1)
We move all terms to the left:
3-(-3(2t+1))=0
We calculate terms in parentheses: -(-3(2t+1)), so:We get rid of parentheses
-3(2t+1)
We multiply parentheses
-6t-3
Back to the equation:
-(-6t-3)
6t+3+3=0
We add all the numbers together, and all the variables
6t+6=0
We move all terms containing t to the left, all other terms to the right
6t=-6
t=-6/6
t=-1
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