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OpenStudy (anonymous):
the sum of two numbers is 40. the sum of the smaller and 4 times the larger is 115. find the numbers
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OpenStudy (anonymous):
x+y=40 x+4y=115
myininaya (myininaya):
x=40-y x=115-4y so 40-y=115-4y 40=115-3y 40-115=-3y -3y=-75 y=25 so x=40-25=15
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