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8u-5u-2u-1=19
We simplify the equation to the form, which is simple to understand
8u-5u-2u-1=19
We move all terms containing u to the left and all other terms to the right.
+8u-5u-2u=+19+1
We simplify left and right side of the equation.
+1u=+20
We divide both sides of the equation by 1 to get u.
u=20
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