=7.3x1/4+2.7x1/4=1/4x(7.3+2.7)=1/4x10=2.5
7.3/4+2.7x0.25=(7.3+2.7)/4=10/4=2.5如有帮助请采纳,如对本题有疑问可追问,Good luck!
7.3/4+2.7x0.25=(7.3+2.7)/4=10/4=2.5
0.25=1/4 所以2.7×0.25=2.7×1/4=2.7/4 (7.3+2.7)/4