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-8=-2+-2t
We move all terms to the left:
-8-(-2+-2t)=0
We add all the numbers together, and all the variables
-(-2t)-8=0
We get rid of parentheses
2t-8=0
We move all terms containing t to the left, all other terms to the right
2t=8
t=8/2
t=4
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