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Best Answer

x + y = 10

y = x + 8

so,

x + (x + 8) = 10

2x + 8 = 10

2x + 8 - 8 = 10 - 8

2x = 2

x = 1 and y = 9 because

y = x + 8 y = 1 + 8 y = 9

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Q: X plus y equals 10 y equals X plus 8 subsitute this method?
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