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7×-2y=9 and 4x+6y=15

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7×-2y=9 and 4x+6y=15

Posted by Seethalakshmi Suresh 4 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Vinod Khandelwal 4 years, 4 months ago

we have to find the value of x and y so by using elimination method 7x-2y=9----------------eq1 we have to multiply eq1 by 3 to make the variable y same (7x-2y=9)*3 21x-6y=27-----------eq1 4x+6y=15------------eq2 by elimination method by adding the eq1 and eq2 21x-6y=27 4x+6y=15 the -6y and +6y get canclled so 24x=42 x=42/24 the value of x is 7/4 putting the value of x in eq2 4x+6y=15 4*7/4+6y=15 4 and 4 get canclled 7+6y=15 6y=15-7 6y=8 y=8/6 that is 4/3 the value of x=7/4 the value of y=4/3

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CBSE > Class 10 > Mathematics

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Don't post personal information, mobile numbers and other details.
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Posted by Kanika . 1 month, 4 weeks ago

CBSE > Class 10 > Mathematics