3/4+37/7×1/4+7/26÷4

问题描述:

3/4+37/7×1/4+7/26÷4

3/4+37/7×1/4+26/7÷4
=3×1/4+37/7×1/4+26/7×1/4
=(3+37/7+26/7)×1/4
=(3+9)×1/4
=12×1/4
=3