solve each system by substitution 7x+2y=-19 -x+2y=21

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solve each system by substitution 7x+2y=-19 -x+2y=21

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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what we are solving for ?
ya
what do you mean? it's the system and I need to solve it

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Other answers:

I think is solve for X?
yes
okay =D!
here try this web site an let me know if this helps! www.mathway.com ~Jess~
it's not free...I need a full steps,not only the answers
ya that only bad thing about that u have to sign up to it .
I signed up. And to see the steps they asked money...But thank you!
oh i am sorry i didn't know that !! never signed up to it i am sorry!!!
no problem. But thank you anyway

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