21x=-6x-3

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Solution for 21x=-6x-3 equation: 



21x=-6x-3

We move all terms to the left:

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

We get rid of parentheses

21x+6x+3=0

We add all the numbers together, and all the variables

27x+3=0

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

27x=-3

x=-3/27

x=-1/9

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