3 years ago

X~4y=11 , 5x~7y=~10 system of equation using elimination to solve

1 answer:

3 0

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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