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OpenStudy (anonymous):
The sum of two numbers 51. The smaller number is 9 less than the larger number. What are the numbers?
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OpenStudy (anonymous):
x-y=9 and x+y=51 => x=y+9 and y+9+y=51 => 2y=42 =>y=21
OpenStudy (anonymous):
and x=30
OpenStudy (anonymous):
lets say the smaller number is x then larger number should be x+9 sum up these: 2x+9=51 when we solve for x, x=21
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