=i ⇒(4x+9y−3)+i(2x−7y−3)=0+10i On comparing the real and imaginary parts 4x+9y−3=0 and 2x−7y−3=10 ⇒‌‌4x+9y=3‌‌‌⋅⋅⋅⋅⋅⋅⋅(i) 2x−7y=13‌‌‌⋅⋅⋅⋅⋅⋅⋅(ii) On subtracting Eq. (ii) ×2 from Eq. (i), ‌4x+9y=3 ‌4x−14y=26 ‌23y=−23 ‌y=−1 From Eq. (i), x=3 ∴‌‌x+y=2