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OpenStudy (anonymous):
solve a system of equation by substitution -5x+6y=-9 -2x+y=-5
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OpenStudy (anonymous):
(-2) -5x+6y=-9 (-2) (5) -2x+y=-5 (5) 10x-12y=18 -10x+5y=-25 (-7y=-7)/-7= y=1 Afterwards, take any one of the equations above and substitute y for 1 and get your x.
OpenStudy (anonymous):
thanks
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