6(3-x)=21+15

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Solution for 6(3-x)=21+15 equation: 



6(3-x)=21+15

We move all terms to the left:

6(3-x)-(21+15)=0

We add all the numbers together, and all the variables

6(-1x+3)-36=0

We multiply parentheses

-6x+18-36=0

We add all the numbers together, and all the variables

-6x-18=0

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

-6x=18

x=18/-6

x=-3

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