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7t-12=2t*3
We move all terms to the left:
7t-12-(2t*3)=0
We add all the numbers together, and all the variables
7t-(+2t*3)-12=0
We get rid of parentheses
7t-2t*3-12=0
Wy multiply elements
7t-6t-12=0
We add all the numbers together, and all the variables
t-12=0
We move all terms containing t to the left, all other terms to the right
t=12
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