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489.50+t=756.80
We move all terms to the left:
489.50+t-(756.80)=0
We add all the numbers together, and all the variables
t+489.50-(756.8)=0
We add all the numbers together, and all the variables
t-267.3=0
We move all terms containing t to the left, all other terms to the right
t=267.3
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