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Mathematics 15 Online
OpenStudy (anonymous):

find the numerical value if x = 4, & y =9. 7(x+2y) =

jimthompson5910 (jim_thompson5910):

7(x+2y) 7(4+2y) .. replace x with 4 (since x = 4) 7(4+2*9) .. replace y with 9 (since y = 9) ???

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