(12*21*4.5*10.2)/(15*4*0.7*5.1)
1个回答
(12*21*4.5*10.2)/(15*4*0.7*5.1)
=(3*4*3*7*3*15*2*51)/(15*4*7*51)
=3*3*3*2
=54
相关问题
12*21*45*10.2除以(15*4*0.7*5.1)=?简便计算
2(x+15)=x-10 4(x+7)=2(x-1) -7( x+1)=21 6(x-0.5)-x=12 ..
1*3*4+2*6*12/2*5*7+4*10*21
[12+21*45*10.2]除以[15*4*0.7*51]
求几道有理数题-4.2+5.7-8.4+10= 12-(-18)+(-7)-15= (-0.8)+12+(0.7)+(-
3/7:5/21 4/15:4/25 1:4/5
7/5×5= 7/10×4= 3/4×12= 5×2/15=
列式计算;4/5+7/12+9/10 4/5-(3/5+2/5) 3/8+4/15+5/8+7/15
5/7-4/15+1/15+2/7= 26*3/4-14*3/4= 24*(5/12-1/4+5/6)= 6.5*2/7