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0.63+0.42t=2.10t-0.49
We move all terms to the left:
0.63+0.42t-(2.10t-0.49)=0
We get rid of parentheses
0.42t-2.10t+0.49+0.63=0
We add all the numbers together, and all the variables
-1.68t+1.12=0
We move all terms containing t to the left, all other terms to the right
-1.68t=-1.12
t=-1.12/-1.68
t=1/1.5
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