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Mathematics 7 Online
OpenStudy (anonymous):

HELP !! Giving Out Medals ;) NEED ANSWERS NOW !! Evaluate 5x - 2y + (7x - y) for x= 7 and y= -2 A. -45 B. -18 C. 63 D. 90

OpenStudy (adamaero):

plug in the x & y: (replace x with 7...)

OpenStudy (dmndlife24):

5(7) - 2(-2) + (7(7) - (-2)) = 90

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