7/12+5/12*24/35=(要简算)

问题描述:

7/12+5/12*24/35=(要简算)

7/12+5/12*24/35
=7/12+2/7
=49/84+24/84
=73/84

7/12+5/12*24/35
=1-5/12+5/12*24/35
=1-5/12*(1-24/35)
=1-5/12*11/35
=1-11/84
=73/84