-20=-5u

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Solution for -20=-5u equation:


-20=-5u

We simplify the equation to the form, which is simple to understand 
-20=-5u

We move all terms containing u to the left and all other terms to the right. 
+5u=+20

We simplify left and right side of the equation. 
+5u=+20

We divide both sides of the equation by 05 to get u. 
u=4

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