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7x-2y=5xy, 8x+7y=15xy. Solve the linear pair …

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7x-2y=5xy, 8x+7y=15xy. Solve the linear pair of equation.

Posted by Kartik Sharma 6 years, 7 months ago

CBSE > Class 10 > Mathematics

3 answers

Ram Kushwah 6 years, 7 months ago

$\begin{array}{l}7x-2y=5xy\;\;----(1)\\8x+7y=15xy\;----(2)\\from\;1)\;and\;(2)\\8x+7y=3(7x-2y)\\8x+7y=21x\;-6y\\13y\;=13x\;so\;x=y\\Now\;from(1)\\7x-2x=5x^{2\;}\;or\;\;5x=5x^2\\x=1\;hence\;y=1\\\\\\\end{array}$

0Thank You

Samridhi Yadav 6 years, 7 months ago

Sorry, x=1 and y=1

1Thank You

Samridhi Yadav 6 years, 7 months ago

X=1 and y=2

1Thank You

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CBSE > Class 10 > Mathematics