-7u+2(u-3)=-21

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Solution for -7u+2(u-3)=-21 equation:


-7u+2(u-3)=-21

We simplify the equation to the form, which is simple to understand 
-7u+2(u-3)=-21

Reorder the terms in parentheses
-7u+(+2u-6)=-21

Remove unnecessary parentheses
-7u+2u-6=-21

We move all terms containing u to the left and all other terms to the right. 
-7u+2u=-21+6

We simplify left and right side of the equation. 
-5u=-15

We divide both sides of the equation by -5 to get u. 
u=3

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