1楼:妙酒
列式计算
=3/10÷(7/8÷7/20)
=3/10÷5/2
=3/25
3/10×【7/8÷(3/5-1/4)】用简便方法
2楼:匿名用户
=3/10x[7/8÷(12/20-5/20)=3/10x[7/8÷7/20]
=3/10x[7/8x20/7]
=3/10x5/2
=3/4
4/5×7/8+7/8÷5(简便计算) (1—8/15×3/4)÷3/5(简便计算) 1—5/8÷
3楼:温柔_黏喻勊
计算器1-5/8/25/28-3/10 = 0.69910714285714
计算器4/5*7/8+7/8/5 = 0.875
1/8x9/7+5/7÷8能简算的要简算
4楼:提莫送你超神
1/8x9/7+5/7÷8可以先将里面的5/7÷8化成5/7×1/81/8x9/7+5/7×1/8
=1/8×(9/7+5/7)
=1/8×16/7
=2/7
5楼:凌月霜丶
1/8x9/7+5/7÷8能简算的要简算
1/8x9/7+5/7÷8
=1/8*(9/7+5/7)
=1/8*16/7
=2/7
6楼:张zq芹
1/8x9/7+5/7÷8
=1/8x(9/7+5/7)
=1/8x16/7
=2/7提取相同的因数,加数相加
能简算的要简算 (3/4-3/5)÷7/10 (2/3+2/9)÷20/21 1-5/14
7楼:
1) =(3/20)*(10/7)=3/142) =(6/9-2/9)*(21/20)=(4/9)*(21/20)=7/15
3) =1-(5/14)*(7/5)=1-1/2=1/24) =(1/4)*(4/5)/(7/6)=(1/5)*(6/7)=6/35
8楼:匿名用户
(3/4-3/5)÷7/10
=(15/20-12/20)x10/7
=3/20 x 10/7
=3/14
(2/3+2/9)÷20/21
=(6/9+2/9)x21/20
=8/9 x 21/20
=2/3 x 7/5
=14/15
1-5/14÷5/7
=1-5/14 x 7/5
=1-1/2
=1/2
1/4÷(2/3+1/2)×4/5
=1/4÷7/6 x 4/5
=6/28 x 4/5
=6/35
8(2 3)2 3能简算就简算,5/8×(2/5+1/3)÷2/3 能简算就简算
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