10.5+10.52题意不清,也可能是X+0.5X=10.5
M=0.5
9090*271.4+90900*271.4
=271.4*
=271.4*99990
=271.4*100000-271.4*10
=27137286
10
21.5*2-40.5
=2.5
10.5+10.52题意不清,也可能是X+0.5X=10.5
M=0.5
9090*271.4+90900*271.4
=271.4*
=271.4*99990
=271.4*100000-271.4*10
=27137286
10
21.5*2-40.5
=2.5