128*4又1/2+40÷1/128-15*12.8=?
问题描述:
128*4又1/2+40÷1/128-15*12.8=?
答
128*4又1/2+40÷1/128-15*12.8
=128*4.5+40*128-1.5*128
=128*(4.5+40-1.5)
=128*43
=5504