括号5/12+9分之二括号乘三点六
括号5/12+9分之二括号乘三点六
(5/12+12/9)×3.6=(12/36+48/36)×36/10=60/36×36/10=6
13×括号1/26+11分之二括号乘22
13×(1/26+2/11)×22
=13×1/26×22+13×2/11×22
=11+52
=63
6年级括号四分之一加九分之二括号乘以三点六这道题用简便计算
(1/4+2/9)×3.6
=1/4×3.6+2/9×3.6
=0.9+0.8
=1.7
当a=7求括号14-2a括号×5分之二
a=7
(14-2a)x 2/5
=(14-2*7)x2/5
=(14-14)x2/5
=0
三点六除以带括号十二乘小括号0.53减0.45小括
3.6÷[12x(0.53-0.45)]
=3.6÷(12x0.08)
=3.6÷0.96
=3.75
x 括号x-5分之二括回=360
x(x-2/5)=360
x^2-2/5x=360
x^2-2/5x+1/25=360+1/25
(x-1/5)^2=9001/25
x-1/5=±(√9001)/5
x1=(√9001)/5+1/5,x2=-(√9001)/5+1/5
负13分之二和负括号正0.154括号
负13分之二≈-0.15385
负括号正0.154括号=-0.154
所以负13分之二(>)负括号正0.154括号
2/3+9分之二括号外除以21分之二十
(2/3+2/9)除于2/21
=2/3×21/2+2/9×21/2
=7+7/3
=28/3
采纳哦!谢谢!(或者是7又7/3)
三分之二乘三点九加六分之五乘三点六怎么样简算
=4/6×3.96+5/6×3.6
=1/6(4×3.96+5×3.6)
=1/6×33.84
=5.64
19分之8_括号19分之8减9分之二
19分之8_括号19分之8减9分之二
8/19-(8/19-2/9)
=8/19-8/19+2/9
=2/9