द एरिया वेयर द इंफॉर्मेशन ऑफ 12.5 सेंटीमीटर
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a) x+y=5 and 2x -3y =4
b) 3x+4y =10 and 2x -2y 2
d) 1 and -3
c) 3x-5y-4 =0 and 9x= 2y +7
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