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solve for x and y: 2x+3y=9 4x+6y=18

Posted by Maisha Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Ingle 6 years, 10 months ago

2x + 3y = 9......... (i)
4x + 6y = 18 .... (ii)
On multiplying equation (1) with 2, we get
2(2x + 3y) = 2(9)
⇒ 4x + 6y = 18 .... (iii)
Here, both the equation (ii) and (iii) are same and we know that when both equations are exactly same there are infinitely many solutions and the value of x and y can't be predicted.

0Thank You

Mehakdeep Kaur 6 years, 10 months ago

Y=5/3; x=6{substition method}

0Thank You

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Posted by Kanika . 1 month, 1 week ago

CBSE > Class 10 > Mathematics