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OpenStudy (hailey_465):
1.solve the system by substitution -2.5x+y=13.5 2.25x-y=12.25 A: (-5,1) B: (-1,5) C: (1,-5) D: (5,-1)
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OpenStudy (mathstudent55):
Do you know how to use the substitution method to solve a system of equations?
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