1+4/17*(2+2/3-3/4)+17+11/12*21/17

问题描述:

1+4/17*(2+2/3-3/4)+17+11/12*21/17

1+4/17*(2+2/3-3/4)+17+11/12*21/17=1+1/17*(8+8/3-3+11/12*21)+17=1+1/17*(5+8/3+77/4)+17=1+1/17*(26+2/3+1/4)+17=1+1/17*323/12+17=1+19/12+17=18+1+7/12=235/12