依据题意列式计算如下:
5/12+2/5
=25/60+24/60
=49/60
=60分之49
5/12+2/5
=25/60+24/60
=49/60
答:结果等于49/60
分数计算5/12+2/5
解题思路:四则运算规则(按顺序计算、先算乘除后算加减,有括号先算括号,有乘方先算乘方)即脱式运算(递等式计算)需在该原则前提下进行
解题过程:
5/12+2/5
=25/60+24/60
=49/60
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解:5/12+2/5=25/60+24/60=49/60
答:等于49/60
5/12+2/5
=25/60+24/60
=49/60