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28=2t-4
We move all terms to the left:
28-(2t-4)=0
We get rid of parentheses
-2t+4+28=0
We add all the numbers together, and all the variables
-2t+32=0
We move all terms containing t to the left, all other terms to the right
-2t=-32
t=-32/-2
t=+16
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