2x-3y=13, 7x- 2y= 20
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pankajkumarjaiswal:
thanks
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(2x -3y = 13)×2
(7x- 2y= 20)×3
4x - 6y = 26 eq1
21x - 6y = 60 eq2
eq2 - eq1= 34
21x-4x= 34
17x = 34
x= 2
put in given eq so
2×2 - 3y = 13
4 - 3y = 13
-3y = 13-4= 9
y = -3
(7x- 2y= 20)×3
4x - 6y = 26 eq1
21x - 6y = 60 eq2
eq2 - eq1= 34
21x-4x= 34
17x = 34
x= 2
put in given eq so
2×2 - 3y = 13
4 - 3y = 13
-3y = 13-4= 9
y = -3
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