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t/2.1=-7
We move all terms to the left:
t/2.1-(-7)=0
We add all the numbers together, and all the variables
t/2.1+7=0
We multiply all the terms by the denominator
t+7*2.1=0
We add all the numbers together, and all the variables
t+14.7=0
We move all terms containing t to the left, all other terms to the right
t=-14.7
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