2.42除以四分之三+4.58乘以一又三分之一-4除以三简便运算怎么做啊?

解:原式=(2.42+4.58-1)×三分之四
=8

2.42除以四分之三+4.58乘以一又三分之一-4除以三
=2.42*4/3+4.58*4/3-4/3
=4/3*(2.42+4.58-1)
=4/3*6
=8

2.42/(3/4)+4.58*(1+1/3)-4/3
=2.42*(3/4)+4.58*(4/3)-(4/3)
=(2.42+4.58-1)*(4/3)
=6*(4/3)
8