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-19.9-4.2u=15.64-1.5u+15.22
We simplify the equation to the form, which is simple to understand
-19.9-4.2u=15.64-1.5u+15.22
We move all terms containing u to the left and all other terms to the right.
-4.2u+1.5u=+15.64+15.22+19.9
We simplify left and right side of the equation.
-2.7u=+50.76
We divide both sides of the equation by -2.7 to get u.
u=-18.8
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