C-12-Q064mediumsingle_mcqউদাহরণ ৭: ax−by=ab=bx−ayax - by = ab = bx - ayax−by=ab=bx−ay এর সমাধান (x,y)(x, y)(x,y) কত?a(aba+b, aba+b)\left(\dfrac{ab}{a + b},\; \dfrac{ab}{a + b}\right)(a+bab,