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-0.11+-2t=6.69
We move all terms to the left:
-0.11+-2t-(6.69)=0
We add all the numbers together, and all the variables
-2t-6.8=0
We move all terms containing t to the left, all other terms to the right
-2t=6.8
t=6.8/-2
t=-3+0.8/2
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