Question 864611
find two numbers for which the sum is 93 and the difference is 9. 
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Equations:
x + y = 93
x - y = 9
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Add and solve for "x":
2x = 102
x = 51
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Solve for "y":
x + y = 93
51 + y = 93
y = 42
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Cheers,
Stan H.