17.72×3/11-（7/13-4/5）×65-5.47÷11/3+12.25×41/11=

17.72×3/11-（7/13-4/5）×65-5.47÷11/3+12.25×41/11
=17.72×3/11-（35-42）-5.47×3/11+12.25×41/11
=(17.72-5.47)×3/11+12.25×41/11-7
=12.25×3/11+12.25×41/11-7
=(3+41)×12.25/11-7
=50-7
=43

奇数与偶数的和、差，结果还是奇数。偶数与偶数、奇数与奇数的和差 ，结果一定是偶数。