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2×(-3) (-4)×括号1/6 1/4×(-3)等于多少

此题不完整:① (-3) (-4)之间缺运算符;② “括号”只有一半;③ 1/6 1/4之间缺运算符。 改为:2×(-3)×(-4)×(⅙×¼)×(-3) =-3

6/5×括号-1/3-1/2括号乘以4/5 =6/5x(-2/6-3/6)x4/5 =6/5x(-5/6)x4/5 =-1x4/5 =-4/5

(1/6+3/4-2/3)x12 =(2+9-8)/12x12 =2+(9-8) =2+1 =3

see

一又1/24-2×括号3/8+1/6-3/4括回乘十二简便运算 一又1/24-2×括号3/8+1/6-3/4括回乘十二 =-25/24-2*(3/8+1/6-3/4)*12 =-25/24-24*3/8-24*1/6+24*3/4 =-25/24-9-4+18 =3又23/24

6×(1/4+5/6-1/3)×2 =(6×2)×(1/4+5/6-1/3) =12×(1/4+5/6-1/3) =12×1/4+12×5/6-12×1/3 =3+10-4 =9

1/2+(1/4-1/6) =1/2 +(3-2)/12 =1/2 +1/12 =(6+1)/12 =7/12

如图

(6又1/2-3又1/4)÷(1/4-1/8) =3又1/4÷1/8 =(3+1/4)×8 =24+2 =26。

(3/4-1/8)×(5/6+2/3) =(6/8-1/8)×(5/6+4/6) =5/8×10/6 =25/24 =1又1/24

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