3/4*1/6+2/3*1/4 15/16*15 53/54* 55 简便计算
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3/4*1/6+2/3*1/415/16*1553/54*55简便计算3/4*1/6+2/3*1/415/16*1553/54*55简便计算3/4*1/6+2/3*1/415/16*1553/54*5
3/4*1/6+2/3*1/4 15/16*15 53/54* 55 简便计算
3/4*1/6+2/3*1/4 15/16*15 53/54* 55 简便计算
3/4*1/6+2/3*1/4 15/16*15 53/54* 55 简便计算
3/4*1/6+2/3*1/4
=1/4x3/6+1/4x2/3
=1/4x(3/6+2/3)
=1/4x7/6
=7/24
15/16*15
=(1-1/16)x15
=1x15-1/16x15
=15-15/16
=14又1/16
53/54* 55
=53/54x(54+1)
=53/54x54+53/54x1
=53+53/54
=53又53/54
3/4*1/6+2/3*1/4
=1/4*(3/6+2/3)
=1/4*7/6
=7/24
15/16*15
=15/16*(16-1)
=15-15/16
=14又1/16
53/54* 55
=53/54*(54+1)
=53+53/54
=53又53/54
1+2+3+4+5+6+1/15
1/2*1/15+1/3*1/2 6-(3/4-2/5) 1/6+1/5+1/2 4/5+11/15+3/10
3/4*1/6+2/3*1/4 15/16*15 53/54* 55 简便计算
1-1/2+1/3-1/4+1/5-1/6+…+1/15=23*[1/( )+1/( )+1/( )+1/( )]
1/15*4/3+5/6*4/15+4/9*2/15=?简便运算!
2/1 3/1 4/1 5/1 6/1 8/1 10/1 12/1 15/1 20/1
1+2+3+4+5+6+10+15
(1^3+2^3+3^3+...+14^3+15^3)/(2^3+4^3+6^3+...+28^3+30^3)
1、2、2、4、3、6、4、( )、(
输出以下杨辉三角形.1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1 1 7 21 35 35 21 7
1/3+1/6+1/10+1/15+1/(1+2+3+4+5+...n)=?找规律
1×2+2×4+3×6+...+1002×2004/1×5+2×10+3×15+...+1002×5010
解不等式3x+1/4< 15x-2/6- 6x+4/3
2/3-1/8-1/6= 1/3+2/5+4/15= 1/4+2/5+3/20= 1-3/4-1/8= 4/5-1/3-2/15=
1/8+3/16 1/4-1/16 8-1分之8 6 6-60% 3/4×1/3÷5 1/2-1/5 1/2+1/10-1/5 3/5-(1/15+1/3)
1 1 -1 1 -2 1 1 -3 3 -1 1 -4 6 -4 1 1 -5 10 x 5 -1 1 -6 15 -20 15 -6 1 x是?
编程,打印杨辉三角(要求七行) 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1
1+2+3/6+1/4=