0.52×72-7 .2 58×0.72?

2024-12-03 07:35:48
推荐回答(1个)
回答1:

0.52×72-7 .2 +58×0.72
=72x0.52-72x0.1+72x0.58
=72x(0.52-0.1+0.58)
=72x1
=72