括号1/6-2/7+2/3括号除以括号-5/42括号
括号1/6-2/7+2/3括号除以括号-5/42括号
=(1/6-2/7+2/3)×(-42/5)
=-(42×1/6-42×2/7+42×2/3)/5
=-(7-12+28)/5
=-23/5
9/2除以括号括号1/2 3/4括号成5/6括号
9/2÷【(1/2+3/4)×5/6】
=9/2÷【5/4×5/6】
=9/2÷25/24
=108/25
括号-5/21加上3/14,括号除以,括号,-1/42,括号
(-5/21+3/14)÷(-1/42)
=(-5/21+3/14)x(-42)
=5/21x42-3/14x42
=10-9
=1
括号3/5减5/12括号除以括号1/12加5/6括
(3/5-5/12)÷(1/12+5/6)
=(36/60-25/60)÷(1/12+10/12)
=11/60÷11/12
=1/5
括号1/6+2/7括号除以11/42
(1/6+2/7)除以11/42=(1/6+2/7)乘以42/11=1/6乘以42/11+2/7乘以42/11=
7/11+12/11=19/11
11/18除以大括号2-括号1/4 5/6括号大括号
11/18÷【2-(1/4+ 5/6)】
=11/18÷【2-1又1/12】
=11/18÷11/12
=2/3
18×括号5/6-2/9括号
18x(5/6-2/9)
=18x5/6-18x2/9
=3x5-2x2
=15-4
=11
谢谢,请采纳
24乘括号5/6-2/3+3/4括号。
24X(5/6-2/3+3/4)
=24X5/6-24X2/3+24X3/4
=4X5-8X2+6X3
=20+18-16
=22
括号-1又1/4+0.25-5/6括号除以括号1/3-1括号
(-1又1/4+0.25-5/6)÷(1/3-1)
=(-1-1/4+1/4-5/6)÷(-2/3)
=(-11/6)X(-3/2)
=11/4
=2又4分之3
括号-2/3-负5/6 11/12括号除以1/24
括号-2/3-负5/6 11/12括号除以1/24
解:
(-2/3-5/6+11/12)÷1/24
=-2/3×24-5/6×24+11/12×24
=-16-20+22
=-14