Math, asked by ana925, 11 months ago

Solve x and y.
(i) 3x + 7y = 36
6x + 5y = 27
(ii) 11x + 2y =125
2x + 1ly = 44

Answers

Answered by MithuMithra33

I.) x= 1/3

y=5

ii)x=11

y=2

Hope it is helpful

MithuMithra33: 3x+7y=36. this is equation 1 multiple this eauation with 2

MithuMithra33: u ll get 6x+14y=72 equation 3

MithuMithra33: subtract 3 equation - 2 equation

MithuMithra33: i.e 6x+14y=72 - 6x +5y=27

MithuMithra33: u will get 9y=45

MithuMithra33: then y = 5

MithuMithra33: sub the y value in any equation u will get x= 1/3

MithuMithra33: next 2 sum just multiple 1st equation with 2 and 2 nd equation with 11

MithuMithra33: u will get 22x+4y=250 and 22x+121y=88 subtract thus 2 equation u will get 117y = 234 cancel this u will get y= 2

MithuMithra33: next sub y value in any equation u will get x = 11

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