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.76-8.1t-7.89=-6.9t+8.47
We move all terms to the left:
.76-8.1t-7.89-(-6.9t+8.47)=0
We add all the numbers together, and all the variables
-8.1t-(-6.9t+8.47)-7.13=0
We get rid of parentheses
-8.1t+6.9t-8.47-7.13=0
We add all the numbers together, and all the variables
-1.2t-15.6=0
We move all terms containing t to the left, all other terms to the right
-1.2t=15.6
t=15.6/-1.2
t=-13
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