3x+7y=21 and 5x-3y=8
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3x+7y=21..1
5x-3y=8.....2
Multiply eqn1 by 5 and eqn by 3
15x+35y=105................3
15x-9y=24.....................4
substract 3-4
44y=81
y=81/44
put this value in any of the above question
u will get x=119/44
5x-3y=8.....2
Multiply eqn1 by 5 and eqn by 3
15x+35y=105................3
15x-9y=24.....................4
substract 3-4
44y=81
y=81/44
put this value in any of the above question
u will get x=119/44
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