1.

e0#h) z=f 0e A6=5-%2 0O+D) L=fpel1 =figs X -€1 9+9 81

Answer»

5 = 13x + 78y -(1)3 = 7x + 28y -(2)

13x + 78y = 5 -(1)7x + 28y = 3 -(2)

multiplying 1st equation by 7 and 2nd by 13

91x + 546y = 3591x + 364y = 39(-) (-) (-)------------------------182y = -4y = -2/91

Putting the value of y in 1st equation

13x + 78y = 513x + (78 * -2/91) = 513x - 12/7 = 513x = 47/7x = 47/91

x = 47/91 and y = -2/91

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Let 1/y=m2x-3m=9...(1)*33x+7m=2...(2)*2———————-6x-9m=276x+14m=4——————--23m=23

M=23/(-23)=-1

Put m=-1 in 2x-3m=92x-3*(-1)=92x+3=92x=9-3X=6/2=3X=3

M=-11/y=-1Y=-1

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