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-u/7+2=9
We simplify the equation to the form, which is simple to understand
-u/7+2=9
We move all terms containing u to the left and all other terms to the right.
-0.14285714285714u=+9-2
We simplify left and right side of the equation.
-0.14285714285714u=+7
We divide both sides of the equation by -0.14285714285714 to get u.
u=-49
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