7x-12Y=842x-3Y=9

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Solution for 7x-12Y=842x-3Y=9 equation: 



7x-12=842x-3=9

We move all terms to the left:

7x-12-(842x-3)=0

We get rid of parentheses

7x-842x+3-12=0

We add all the numbers together, and all the variables

-835x-9=0

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

-835x=9

x=9/-835

x=-9/835

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