2/7-括号3/8-5/7括弧
2/7-括号3/8-5/7括弧
2/7-(3/8-5/7)
=2/7-3/8+5/7
=2/7+5/7-3/8
=1-3/8
=5/8
括号3/4-7/8-5/12括号乘括号-24等于几
原式=-3/4×24+7/8×24+5/12×24=-18+21+10=13
5/7-括号3/8-2/7括号用简便方法计算
5/7-(3/8-2/7)
=5/7-3/8+2/7
=5/7+2/7-3/8
=1-3/8
=5/8
括号2/9-5/9×3/8括号乘以16/7
(2/9-5/9×3/8)x16/7
=(16/72-15/72)x16/7
=1/72x16/7
=2/63
41/7-括号3/8-1/7
41/7-(3/8-1/7)
=41/7-3/8+1/7
=42/7+1/7-3/8
=6-3/8
=5又5/8
3/4×括号17/8-5/9括号
3/4×(17/8-5/9)
=3/4×113/72
=113/96
=1又17/96
7/8-括号7/8-4/5括弧怎么算
简便计算
7/8-(7/8-4/5)
=7/8-7/8+4/5
=0+4/5
=4/5
3/5除以中括号7/8-括号2/5+3/18
3/5÷【7/8-(2/5+3/8)】
=3/5÷【7/8-31/40】
=3/5÷1/10
=6
括号1/3+7/8-5/12括号÷(1/24)
(1/3+7/8-5/12)÷1/24
=(1/3+7/8-5/12)×24
=1/3×24+7/8×24-5/12×24
=8+21-10
=19
括号7/8-5/6括号乘括号1/2-1/4=
(7/8-5/6)x(1/2-1/4)
=(21/24-20/24)x(2/4-1/4)
=1/24x1/4
=1/96