132÷132又132/133简便运算
1个回答
132÷132又132/133简便运算
解,得：
==132/[(132*133+132)/133]
==132*[133/(132*133+132）]
==133/(133+1）
==133/134
(6/19)*(11/8)-(9/16)*(3/8)简便运算
解,得：
==(6/19)*[1+(3/8)]-(9/16)*(3/8)
==(6/19)*1+(6/19)*(3/8)-(9/16)*(3/8)
==(6/19)+[(6/19)*(3/8)-(9/16)*(3/8)]
==(6/19)+[(6/19)-(9/16)]*(3/8)
==(6/19)-(3/16)*(3/8)
==(6/19)-(9/128)
==(768/2432)-(54/2432)
==822/2432
==411/1216
5/6*1/13+5/9*2/13+5/18*6/13简便运算
解,得;
==(5/6)*(1/13)+(10/9)*(1/13)+(30/18)*(1/13)
==[(5/6)+(10/9)+(30/18)]*(1/13)
==(65/18)*(1/13)
==5/18
