Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
y:0,15 = ( 2,8 + 0,38 ) : 0,75
y:0,15= 3,18 : 0,75
y:0,15= 4,24
y = 4,24 *0,15
y= 0,636
a.x : 0,15 = (2,8 + 0,38) : 0,75
x : 0,15 =3,18 : 0,75
x : 0,15 = 4.24
x = 4,24 . 0,15
x = 0.636
b.5/12 : x = (5/6 - 1/2) . 5/4
5/12 : x = 1/3 . 5/4
5/12 : x = 5/12
x = 5/12 : 5/12
x = 1
a. \(\frac{5}{12}:x=\left(\frac{5}{6}-\frac{1}{2}\right)\times\frac{5}{4}\)
\(=>\)\(\frac{5}{12}:x=\frac{1}{3}\times\frac{5}{4}=\frac{5}{12}\)
\(=>x=\frac{5}{12}:\frac{5}{12}=1\)
b.\(x:0,15=\left(2,8+0,38\right):0,75\)
\(=>x:0,15=3,18:0,75=4,24\)
\(=>x=4,24\times0,15=0,636\)
\(a.\)\(y-\frac{11}{3}=\frac{12}{5}\)
\(y=\frac{12}{5}+\frac{11}{3}\)
\(y=\frac{91}{15}\)
\(b.2-y=\frac{15}{6}\)
\(y=2-\frac{15}{6}\)
\(y=-\frac{1}{2}\)
\(c.y\times2\frac{2}{3}=\frac{4}{9}\)
\(y=\frac{4}{9}:2\frac{2}{3}\)
\(y=\frac{1}{6}\)
\(d.y:1\frac{2}{5}=\frac{21}{10}\)
\(y=\frac{21}{10}\times1\frac{2}{5}\)
\(y=\frac{147}{5}\)
a)=\(\frac{9}{4}\)
b)=\(\frac{89}{50}\)
c)=\(\frac{7}{9}\)
d)=\(\frac{26}{7}\)
a , Theo thứ tự từ bé đến lớn : 1/12 , 2/3 , 3/4 , 5/6
b, Tính
a, 3/ 4 + 2/3 + 5/12 = 9/12 + 8/12 + 5/12 = 11/6
b, 7/8 - 7/16 - 11/32 = 28/32 - 14/32 - 11/32 = 3/32
c, 3/5 x 2/7 x 5/6 = 3 x 2 x 5 / 5 x 7 x 6 = 3 x 2 x 5 / 5 x 7 x 3 x 2 = 1/7
d , 15/16 : 3/8 x 3/4 = 15/16 x 8/3 x 3/4 = 15 x 8 x 3 / 16 x 3 x4 = 3 x 5 x 8 x 3 / 8 x 2 x 3 x 4 = 15/8
a) 1/12; 2/3; 3/4; 5/6
b)
a) 3/4 + 2/3 + 5/12 = 9/12 + 8/12 + 5/12 = 17/12 + 5/12 = 22/12 = 11/6
b) 7/8 - 7/16 - 11/32 = 28/32 - 14/32 - 11/32 = 14/32 - 11/32 = 3/32
c) 3/5 x 2/7 x 5/6 = 6/35 x 5/6 = 30/210 = 1/70
d) 15/16 : 3/8 x 3/4 = 15/16 x 8/3 x3/4 = 120/48 x 3/4 = 360/192 = 8/15
a) (x + 1/3) : 4/5 = 5/2
x+1/3=5/2*4/5
x+1/3=2
x=2-1/3
x=5/3
b) ( x - 1/3) * 1/2 = 1/3
x-1/3=1/3:1/2
x-1/3=2/3
x=2/3+1/3
x=1
c) 12*1/2 + 15*3/6 < x < 4*2/5 * 1/2
27/2<x<4/5
vì 27/2>4/5 nên đề sai
d) 575 - (6x * 70) = 445
6x*70=575-445
6x*70=130
6x=130:70
6x=13/7
x=13/7:6
x=13/42
e) 8,75 * x + 3,75 * x + 28,7(thiếu dữ kiện)
f) 3/4 * x = 1/4 + 0,75
3/4*x=1
x=1:3/4
x=4/3
**** nhé
a) (x + 1/3) : 4/5 = 5/2
x + 1/3 = 5/2 . 4/5
x + 1/3 = 2
x = 2 - 1/3
x = 5/3
cau lay de qua di aaa
mình càn rất gấp