1.4×0.16+1.4×0.09+1.4×0.75=1.4×□
问题描述:
1.4×0.16+1.4×0.09+1.4×0.75=1.4×□
答
1.4×0.16+1.4×0.09+1.4×0.75
=1.4×(0.16+0.09+0.75)
=1.4×1.
故答案为:1.