12.48-21.28÷7.6×3.1 要脱试
问题描述:
12.48-21.28÷7.6×3.1 要脱试
答
=12.48-2.8x3.1
=12.48-8.68
=3.8
12.48-21.28÷7.6×3.1 要脱试
=12.48-2.8x3.1
=12.48-8.68
=3.8