1+2-3x4:5
2/3x4/5-1/3x4/5
\(\frac{2}{3}\times\frac{4}{5}-\frac{1}{3}\times\frac{4}{5}\)
\(=\frac{8}{15}-\frac{4}{15}\)
\(=\frac{4}{15}\)
k mk nha mấy bạn
Mẫu: 2/3x4=2x4/3=8/3 Mẫu:4x2/3=4x2/3=8/3
a)3/4x5=... b)1/3x2=...
b)3x4/5=... c)3x1/4=...
a) 3x5/4= 15/4
b) 1x2/3= 2/3
c) 3x4/5= 12/5
d) 3x1/4= 3/4
1/9+2/3x4-3/5:3/2=?
hay tinh 1+2-3x4:5
(1-2/2 x 3)(1-2/3x4)(1-2/4 x 5)......(1-2/12x13)
a, (2/3x4/5)x5/6
b,(1/2+1/3)x1/5
Tính bằng hai cách
a, = 8/15 x 5/6 = 40/90 = 4/9
b, = 5/6 x 1/5 = 5/30 = 1/6
a, \(= 8/15 x 5/6 = 40/90 = 4/9\)
b, \(= 5/6 x 1/5 = 5/30 = 1/6\)
1/9+2/3x4-3/5:3/2
= 107/45 nha bạn
nhớ mình đúng nha
hok tốt ^o^
\(\frac{1}{9}+\frac{2}{3}\times4-\frac{3}{5}\div\frac{3}{2}\)
\(=\frac{1}{9}+\frac{8}{3}-\frac{3}{5}\times\frac{2}{3}\)
\(=\frac{1}{9}+\frac{24}{9}-\frac{6}{15}\)
\(=\frac{25}{9}-\frac{6}{15}\)
\(=\frac{125}{45}-\frac{18}{45}\)
\(=\frac{107}{45}\)
2/3x4/5+1/3x4/5
cac ban hay giai giup minh that nhanh nha!
\(\frac{2}{3}\times\frac{4}{5}+\frac{1}{3}\times\frac{4}{5}\)
\(=\left(\frac{2}{3}+\frac{1}{3}\right)\times\frac{4}{5}\)
\(=1\times\frac{4}{5}\)
\(=\frac{4}{5}\)
2/3 x 4/5 + 1/3 x 4/5
= 4/5 x (2/3 + 1/3 )
= 4/5 x 1
= 4/5
mong các bạn nha
(1/1x2+1/2x3+1/3x4.....1/7x8+1/8x9)x100-[5/2-(x+206/100)]:1/2=89