5/7×14+5/7×6+5/7
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5/7×14+5/7×6+5/7
5/14+3/7
填上合适的符号使得等式成立7 7 7 7 =2 7 7 7 7 =3 7 7 7 7 =4 7 7 7 7 =5 7 7 7 7=6 7 7 7 7 =7 7 7 7 7=7 7 7 7 =9 7 7 7 7 =14
2,3,6,5,10,7,14,
5x+14=7x-6
-13×5/7-6×(-5/7)+7×5/7,急
7/5-14/5= 9/8-6/5=
(51又7/12+34.5/6/7)*5/14
简算(5/14)*(5/6)-(7/12)*(5/14)+(9/20)*(5/14)
简算7/8*(8+7)*5/14
6/7×4/5×7×5
5/19 除以 7/5 + 5/7 除以 19/14
7/14*1/5+7/24除以5+1/5
(-7)*(-4/3)*5/14
5,7,14的最小公倍数
7、5、14的最小公倍数
7/10乘5/14
6,10,7,5