This question is from linear equations in two variables in which we have been asked to find the value of x and y from the given equations 2x-3y=13, 7x-2y=20
RS Aggarwal, class 10, chapter 3B, question no 4
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2x−3y=13⟶(i)
7x−2y=20⟶(ii)
Multiplying (i) by 2 and (ii) by 3
4x−6y=26
21x−6y=60
On subtraction : −17x=−34
                   x=2
putting the value of x in (i)
2(2)−3y=13
⇒−3y=9
∴y=−3