20x+6=21x+3

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Solution for 20x+6=21x+3 equation: 



20x+6=21x+3

We move all terms to the left:

20x+6-(21x+3)=0

We get rid of parentheses

20x-21x-3+6=0

We add all the numbers together, and all the variables

-1x+3=0

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

-x=-3

x=-3/-1

x=+3

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