Weegy: Given: 2x + y = 5, x + y = 1 y = 1 - x Substitute: 2x + (1 - x) = 5 2x + 1 - x = 5 x + 1 = 5 x = 4 y = 1 - 4 = -3 Answer: x = 4, y = -3
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2x + y = 11 ; y = 11 - 2x ; x·y = 1 ; x(11 - 2x) = 1 ; 11x - 2x² = 1 ; 2x² - 11x + 1 = 0 ; x = [11 ± sqrt(121 - 8)]/4 = [11 ± sqrt(113)]/4 ; y = 11 - 2x = 11 - 2([11 ± sqrt(113)]/4) = (22 - 22 ± 2 113)/4 = (11 sqrt 113)/2
Answer: x = (11 ± sqrt 113)/4, y = (11 sqrt 113)/2
Added 8 days ago|4/8/2026 9:23:09 AM
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