4*1=15,5*4=21,4*5=11,8*16=48,那么10*9=几

11/15-4/9= 11/15-8/15= 11/15/1/5= 5/14+3/14= 5/14+5/8= 5/14+11/21= 定义新运算 4&1=15,5&4=21,4&5=11,8&16=48,10&9=? 4*1=15,5*4=21,4*5=11,8*16=48,那么10*9=几 5/8+5/6=（ ） 1/7+3/14=（ ） 11/18-5/12= 4/9+11/21= 10/11-4/78/9-5/12 2/7+4/5 17/30-4/15帮帮忙 4/15-4/5+X=1 10/21+(3/20+11/21)= 3/18+5/8-2/18= 7/15-1/5= 2/3-1/3+1/6= 1-1/4-3/4= 5=( ) 4:( )=15 规定a*b=(a-2.5)-(9/8-b),试计算：(21/4)*{3.5*(3/16)}21/4*（3.5*3/16）=21/4*(7/2*3/16)=21/4*[(7/2-2.5)-(9/8-3/16)]=21/4*[(7/2-5/2)-(18/16-3/16)]=21/4*(1-15/16)=21/4*1/16=(21/4-2.5)-(9/8-1/16)=(21/4-5/2)-(18/16-1/16)=(21/4-10/4)-(18/16-1/16)=11/ 十五分之11+4/11+4/15=多少3/5+1/6+5/6=多少 C语言 main() {int a[3][4]={1,3,5,7,9,11,13,15,17,19,21,23},(*p)[4]=a,i,j,k=0;main() { int a[3][4]={1,3,5,7,9,11,13,15,17,19,21,23},(*p)[4]=a,i,j,k=0; for(i=0;i 13/11÷26= 5/8×5= 3/2÷2/3= 8/15×9/10= 5/8×4/15=9/10÷12/5= 21×3/35= 45÷9/5×2/81= 9×5/6÷5/12= 30÷2/3÷4/5= 5/9×11/3×1/2= 3/7÷7/13×14/9= 4/7×28÷1/10= 7/5+11/4+2/1= 4/5(x+1)=11/7 x-15-1/5(x-15)=15+1/5(x-15) .15*3/5*21+15*4/7*21怎么解 x-4/5x-4=21 x-4/5-4=21 5/7+1/8=?2/3+5/9=?3/8+7/12=?4/5-3/10=?8/9-5/7=?11/14-21/11=?9/14+5/21=?6/11-3/8=?5/6-3/4=?22/27-4/9=?7/20+2/5=?2/3-1/8=? 1=5,2=7,3=9,4=11 5=?5=?