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OpenStudy (anonymous):
1. Solve the system by substitution. 2x+y=-11 3x-4y=11 A. (3, 5) B. (-5, -3) C. (-3, -5) D. (5, 3)
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OpenStudy (lucaz):
multiply the 1st eq by 4 and add them
OpenStudy (lucaz):
solve for x then replace x solve for y
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