-21(x-3)=-30x

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Solution for -21(x-3)=-30x equation: 



-21(x-3)=-30x

We move all terms to the left:

-21(x-3)-(-30x)=0

We multiply parentheses

-21x-(-30x)+63=0

We get rid of parentheses

-21x+30x+63=0

We add all the numbers together, and all the variables

9x+63=0

We move all terms containing x to the left, all other terms to the right

9x=-63

x=-63/9

x=-7

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