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X+y=7,2x-3y=11 by substitute method

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X+y=7,2x-3y=11 by substitute method

Posted by Palak Jain 5 years ago

CBSE > Class 10 > Mathematics

2 answers

Palak Jain 5 years ago

Thanks

2Thank You

Yogita Ingle 5 years ago

(1) Given Equation is x + y = 7
x = 7 - y --------- (1)
(2) 2x - 3y = 11
2(7 - y) - 3y = 11
14 - 2y - 3y = 11
14 - 5y = 11
-5y = 11 - 14
-5y = -3
y =
Substitute y = in (1), we get
x = 7 -
=
=
Therefore the value of x = , y =

3Thank You

ANSWER

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CBSE > Class 10 > Mathematics