2.1x-6.3=7x-21

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Solution for 2.1x-6.3=7x-21 equation: 



2.1x-6.3=7x-21

We move all terms to the left:

2.1x-6.3-(7x-21)=0

We get rid of parentheses

2.1x-7x+21-6.3=0

We add all the numbers together, and all the variables

-4.9x+14.7=0

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

-4.9x=-14.7

x=-14.7/-4.9

x=2+1/1

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