6.88×3.43+ 6.86×1.56=

问题描述:

6.88×3.43+ 6.86×1.56=

6.88×3.43+ 6.86×1.56
=3.44×6.86+ 6.86×1.56
=(3.44+1.56)+×6.86
=5×6.86
=34.3+×6.86什么意思??????????6.88×3.43+ 6.86×1.56=3.44×6.86+ 6.86×1.56=(3.44+1.56)×6.86=5×6.86=34.3