<PRE><B>Question 1042626</B>
Find the value of x and y if 7^x+y=343 and 7^x-y=49?
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Note: 343 = 7^3
49 = 7^2
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7^(x+y) = 7^3
7^(x-y) = 7^2
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x+y = 3
x-y = 2
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Add and solve for &quot;x&quot;::
2x = 5
x = 5/2
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y = x - 2 = (5/2)-2 = 1/2
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Cheers,
Stan H.
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