elimination method means to eliminate one of the variables.let us eliminate s.
3r - 5s = 6 ---I
5r + 3s = 44 --II
as a thumb rule multily eq I by 3 (coef. of s in eq II) and multiply eq II by 5 (coef. of s in eq II)
9r - 15s = 18 ---I
25r +15s = 220 --II
By vertical addition
verification: sub stitute r and s in eq.1 we have
(3*7)-(5*3)=6 tallied hnece correct
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