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-0.8u-3.7=-3.4u+1.5
We move all terms to the left:
-0.8u-3.7-(-3.4u+1.5)=0
We get rid of parentheses
-0.8u+3.4u-1.5-3.7=0
We add all the numbers together, and all the variables
2.6u-5.2=0
We move all terms containing u to the left, all other terms to the right
2.6u=5.2
u=5.2/2.6
u=2
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