3/4×1/5+3/4×2/5+0.75×3/5-3/4

3/4*1/5+3/4*2/5+0.75*3/5-3/4简便运算 3/4×1/5+3/4×2/5+0.75×3/5-3/4 4/3*5/1+4/3*5/2+0.75*5/3-4/3简便计算 4分之3+4分之3×5分之2+0.75×5分之3-4分之3 {3/4+4/5+5/6}+{1+2/3+3/4+4/5}-{1+2/3+3/4+4/5+5/6}×{2/3+3/4+4 0.75+(-2 3/4)+(0.125)+(-12 5/7)+(-4 0.75+(-2 3/4)+10.125+(-12 5/17)+(- 4 4:3/5,2:2/5,7:3/7,4:7/4,0.25:1/2,0.75:3/4,0.125:1/8,2:1/7,5/ (1)(1+2/3+3/4+4/5+5/6)*(1+3/4+4/5)-(1+3/4+4/5)*(2/3+3/4+4/5+ 1 2 3 4 5 .1,2,3,4,5, 4分之3乘以5分之1加4分之3乘以5分之2加0.75乘以5分之3减4分之3