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Ray Black
Mathematics
26 April, 03:53
Substitute 7x+2y = - 14, x+y = 8
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Roderick Berger
26 April, 03:55
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From second equation y = 8 - x so
7x + 2 (8 - x) = - 14
5x = - 14 - 16 = - 30
x = - 6
and y = 8 - - 6 = 14
Answer x=-6, y=14
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