7/6减4/7减3/7加2/3,等于几?用简便方法计算
7/6减4/7减3/7加2/3,等于几?用简便方法计算
原式=7/6十2/3一(4/7十3/7)
=11/6一1
=5/6
4/9减3/10加14/9减7/10,用简便方法计算
4/9减3/10加14/9减7/10,用简便方法计算
=4/9+14/9-(3/10+7/10)
=18/9-10/10
=2-1
=1
用简便方法计算12减4/5×2/3-7/15等于多少
12-4/5×2/3-7/15
=12-8/15-7/15
=12-(8/15+7/15)
=12-1
=11
1/4加16/21减3/7的差再减2/7等于几简便计算
1/4加16/21减3/7的差再减2/7等于几简便计算
1/4加16/21减3/7的差再减2/7
=1/4+16/21-3/7-2/7
=21/84+64/84-36/84-24/84
=(21+64-36-24)/84
=25/84
7/8减4/25加2/3简便方法怎么算?
7/8减4/25加2/3简便方法怎么算?
7/8减4/25加2/3
=7/8-4/25+2/3
=
通分计算
没有简算
3/2÷8/7×7/2÷3/4简便方法计算。
3/2÷8/7×7/2÷3/4
=3/2×7/8×7/2×4/3
=(3/2×4/3)×(7/8×7/2)
=2×49/16
=49/8
(4又3/4*3/7+4.75*4/7)除12又2/3简便方法计算 (10.25-5.72-4.28)*16/25简便方法计算
1.原式=(19/4*3/7+19/4*4/7)÷38/3
=19/4(3/7+4/7)÷38/3
=19/4 ÷ 38/3
=3/8
2.(10.5-(5.72+4.28))*16/25
=1/2 * 16/25
=8/25
用简便方法计算2/1*3 3/3*6 5/6*11 7/11*18
用简便方法计算
2/1*3+3/3*6+5/6*11+7/11*18
=1-1/3+1/3-1/6+1/6-1/11+1/11-1/18
=1-1/18
=17/18
21/4除于(3/2减4/1)加7/2简便演算法
21/4除于(3/2减4/1)加7/2简便演算法
21/4除于(3/2减4/1)加7/2
=4/21÷(8/12-3/12)+2/7
=4/21*12/5+2/7
=4/7*4/5+2/7
=2/7*(8/5+1)
=2/7*13/5
=26/35