1 Answer

Moein Kameli · Answer 1 · 2016-10-10T03:12:33+0000

1x + 4y = 11 ⇒ 5x + 20y = 55
5x - 7y = -10 ⇒ 5x - 7y = -10
27y = 65
27 27
y = 2¹¹/₂₇
x + 4(2¹¹/₂₇) = 11
x + 8²²/₂₇ = 11
- 8²²/₂₇ - 8²²/₂₇
x = 2⁵/₂₇
(x, y) = (2⁵/₂₇, 2¹¹/₂₇)

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