若2!=2x3,=3x4x5,=5x6x7x8x9 ,那么4!/6!
1个回答
4!/6!
=4x5x6x7/6x7x8x9x10x11
=1/396
相关问题
若2x=2*3,3x=3*4*5,5x=5*6*7*8*9,那么求4x/6x的值.
1)2x+8=16 (2)x/5=10 (3)x+7x=8 (4)9x-3x=6 (5)6x-8=4 (6)5x+x=9
7x=2+3x 3.5x=28 5(x+8)-5=6(2x-7) 9(x-4)=7(4-x)
1/1x2x3x4+1/2x3x4x5+1/3x4x5x6+1/4x5x6x7+1/5x6x7x8+1/6x7x8x9+
(1)5+2x=1 (2)8-x=3x+2 (3)10x-3=9 (4)6x-7=4x-5 (5)1/2x-6=3/4x
①27x-4x=34.5②3x2.8=4.3③12x-24=6④5.8+2x=20五6.9x-4.1=9.7⑥3.6x+
1/4x-1/2=3/4;7x-5/4=3/8;2x-1/6=5x+1/8;1/2x-7=9x-2/6;1/5x-1/2
解方程. 4.2x-2.7×4=6 0.8x+x=5.4 2x-3.4=7.2 5.3+3x=6.8 6.3-2x+4.
4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7=
2#3=2+3+4=9 5#4=5+6+7+8=26 计算:6#5=( ) 如果X#3=102,那么X=( )