乘法有理数混合运算,【(+3/5)+(-1/2)+(-5/12)】*60(-11)*(-2/5)+(-11)*(+2又3/5)+(-11)*(-1/5)
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乘法有理数混合运算,【(+3/5)+(-1/2)+(-5/12)】*60(-11)*(-2/5)+(-11)*(+2又3/5)+(-11)*(-1/5)
乘法有理数混合运算,
【(+3/5)+(-1/2)+(-5/12)】*60
(-11)*(-2/5)+(-11)*(+2又3/5)+(-11)*(-1/5)
乘法有理数混合运算,【(+3/5)+(-1/2)+(-5/12)】*60(-11)*(-2/5)+(-11)*(+2又3/5)+(-11)*(-1/5)
【(+3/5)+(-1/2)+(-5/12)】*60
=[3/5-1/2-5/12]*60
=36-30-25
=-19
(-11)*(-2/5)+(-11)*(+2又3/5)+(-11)*(-1/5)
=11*(2/5-13/5+1/5)
=11*(-2)
=-22