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-0.4(2t+28)=-30
We move all terms to the left:
-0.4(2t+28)-(-30)=0
We add all the numbers together, and all the variables
-0.4(2t+28)+30=0
We multiply parentheses
-0.8t-11.2+30=0
We add all the numbers together, and all the variables
-0.8t+18.8=0
We move all terms containing t to the left, all other terms to the right
-0.8t=-18.8
t=-18.8/-0.8
t=23+0.4/0.8
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