21x-3=-19x-9

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Solution for 21x-3=-19x-9 equation: 



21x-3=-19x-9

We move all terms to the left:

21x-3-(-19x-9)=0

We get rid of parentheses

21x+19x+9-3=0

We add all the numbers together, and all the variables

40x+6=0

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

40x=-6

x=-6/40

x=-3/20

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