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15=(-5/7)u
We simplify the equation to the form, which is simple to understand
15=(-5/7)u
Simplifying:
15=(-0.714285714286)*u
Reorder the terms in parentheses
15=(-0.714285714286u)
Remove unnecessary parentheses
15=-0.714285714286u
We move all terms containing u to the left and all other terms to the right.
+ 0.714285714286u=-15
We simplify left and right side of the equation.
+ 0.714285714286u=-15
We divide both sides of the equation by 00.714285714286 to get u.
u=-21
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