41/2+( )=41/2×( )括号里填相同的数字
问题描述:
41/2+( )=41/2×( )括号里填相同的数字
具体怎么算
答
设这个数是x
41/2+x=41/2×x
解得x=41/39
41/2=(41/2-1)x
41/2=(39/2)x
x=41/39
41/2+(41/39 )=41/2×(41/39 )