作业帮51又2/3*3/5+41又1/3*3/4+31又1/2*2/3=?
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/14 16:51:35
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51又2/3*3/5+41又1/3*3/4+31又1/2*2/3=?
51又2/3*3/5+41又1/3*3/4+31又1/2*2/3=?
51又2/3*3/5+41又1/3*3/4+31又1/2*2/3=?
51又2/3*3/5+41又1/3*3/4+31又1/2*2/3
=(51+2/3)*3/5+(41+1/3)*3/4+(31+1/2)*2/3
=(153/3+2/3)*3/5+(123/3+1/3)*3/4+(62/2+1/2)*2/3
=155/3*3/5+124/3*3/4+63/2*2/3
=31+31+21
=83