-6-3u+9-(-4u)=

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Solution for -6-3u+9-(-4u)= equation:


-6-3u+9-(-4u)=0

We simplify the equation to the form, which is simple to understand 
-6-3u+9-(-4u)=0

Remove unnecessary parentheses
-6-3u+9+4u=0

We move all terms containing u to the left and all other terms to the right. 
-3u+4u=0+6-9

We simplify left and right side of the equation. 
+1u=-3

We divide both sides of the equation by 1 to get u. 
u=-3

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