2.5×[17/28÷41/4×(0.92−0.88)]×6.3.
问题描述:
2.5×[
÷417 28
×(0.92−0.88)]×6.3. 1 4
答
2.5×[
÷417 28
×(0.92-0.88)]×6.31 4
=2.5×[
÷17 28
×0.04]×6.3,17 4
=2.5×[
×17 28
×0.04]×6.3,4 17
=2.5×
×0.04×6.3,1 7
=(2.5×0.04)×(
×6.3),1 7
=1×0.09,
=0.09.