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Mathematics 7 Online
OpenStudy (anonymous):

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

OpenStudy (texaschic101):

5x - 2y + 7x - y ....when x = 7 and y = -2 now we sub 5(7) - 2(-2) + 7(7) -(-2) 35 + 4 + 49 + 2 = 90

OpenStudy (texaschic101):

any questions ?

OpenStudy (anonymous):

No , but can you help with more ?

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