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OpenStudy (anonymous):
Check my answers? "★" Marks what i chose Solve, using linear combination. 3x + y = 4 2x + y = 4 (–1, 7) (0, 4) (–3, 12)★ (–3, 13)
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OpenStudy (superdavesuper):
Nope u picked the wrong answer. Try this: subtract 1st eqn from the secon n u will find x right away. Solve for y then.
OpenStudy (anonymous):
Thanks!
OpenStudy (anonymous):
multiply all three terms of the bottom by -1, add the two terms
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