10x-3=7x-21

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Solution for 10x-3=7x-21 equation: 



10x-3=7x-21

We move all terms to the left:

10x-3-(7x-21)=0

We get rid of parentheses

10x-7x+21-3=0

We add all the numbers together, and all the variables

3x+18=0

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

3x=-18

x=-18/3

x=-6

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