If U solve Q No. 3 & 6 in reverse way (i.e. first balance & then minmise -- U will get the same result (Same Ans). So U can follow any of the two. But First Balancing & then minmising is more logical..
If U solve Q No. 3 & 6 in reverse way (i.e. first balance & then minmise -- U will get the same result (Same Ans). So U can follow any of the two. But First Balancing & then minmising is more logical..