1,1,2,3,3,4,4,7,( ),( )
1,1,2,3,3,4,4,7,( ),( )
7/2+9/4+(-1/3)-0.25+(-1/6)
1/2 3/4 7/8 27/16 ( )( )
1,2/3,5/3,4/3,7/3,2,3(),()找规律
【1】(4/3+3/4)除以7/12 【2】2/17除以(4/3+3/4)
试比较下列各组数的大小 (1)3+1/7+1和7/3(2)3+2/7+2和3/7(3)3+4/7+4和3/7(4)3+9
(-3又1/2)-(+5.75)+(+7又3/4)-(+12又1/4)+(-3.25)
1/2+3/4-6/5 6/7-1/2+4/5 3/4-(7/12-5/7) 2/3+(13/15+1/3) 15/9-
(-3/4)+1/2;
数列找规律!(1)1,2,-3,-4,5,6,-7,-8(2)-1,-1/2,1/3,1/4,-1/5,-1/6,1/7
求解一元一次方程:(1)7x-[x-1/2(x-1)]=2/3(x-1)(2)3/4[4/3(1/2x-1/4)-16]
(1) 1,1/3,1/5,1/7,1/9 (2)- 1/2*1,1/2*2,- 1/2*3,1/2*4,-1/2*5