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12.8=5-2t
We move all terms to the left:
12.8-(5-2t)=0
We add all the numbers together, and all the variables
-(-2t+5)+12.8=0
We get rid of parentheses
2t-5+12.8=0
We add all the numbers together, and all the variables
2t+7.8=0
We move all terms containing t to the left, all other terms to the right
2t=-7.8
t=-7.8/2
t=-3+1/1.1111111111111
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