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a) 3/5:3/4=3/5x4/3=(3x4)/(5x3)=12/15=4/5
b)2/5:3/10=2/5x10/3=(2x10)/(5x3)=20/15=4/3
c)9/8:3/4=9/8x4/3=(9x4)/(8x3)=36/32=9/8
d)1/4:1/2=1/4x2=2/4=1/2
e)1/8:1/6=1/8x6=6/8=3/4
g)1/5:1/10=1/5x10=10/5=2
A)2/7:4/5=2/7*5/4=10/28=5/14
b)3/8:9/4=3/8*4/9=12/72=1/6
c)8/21:4/7=8/21*7/4=56/84=2/3
D)5/8:15/8=5/8*8/15=40/120=1/3
k nha
a) \(\frac{1}{5}:\frac{2}{15}=\frac{1}{5}\times\frac{15}{2}\)
\(=\frac{15}{10}=\frac{3}{2}\)
b)\(\frac{3}{7}:\frac{9}{14}=\frac{3}{7}\times\frac{14}{9}\)
\(=\frac{42}{63}=\frac{2}{3}\)
c) \(\frac{7}{12}:\frac{21}{24}=\frac{7}{12}\times\frac{24}{21}\)
\(=\frac{168}{252}=\frac{2}{3}\)
d) \(\frac{9}{13}:\frac{27}{26}=\frac{9}{13}\times\frac{26}{27}\)
\(=\frac{234}{351}=\frac{2}{3}\)
k nha
A/ 15/10 = 3/2
B/ 42/63 = 2/3
C/ 168/252 = 2/3
D/ 234/351 = 2/3
\(\frac{1}{4}:\frac{1}{3}-\frac{1}{2}\)
\(=\frac{1}{4}\times3-\frac{1}{2}\)
\(=\frac{3}{4}-\frac{1}{2}\)
\(=\frac{3}{4}-\frac{2}{4}\)
\(=\frac{1}{4}\)
\(ta\)\(có:\)
\(\frac{1}{4}:\frac{1}{3}-\frac{1}{2}\)
\(=\frac{1}{4}\times\frac{3}{1}-\frac{1}{2}\)
\(=\frac{3}{4}-\frac{1}{2}\)
\(=\frac{3}{4}-\frac{2}{4}\)
\(=\frac{1}{4}\)
a) \(\frac{5}{9}:\frac{4}{7}=\frac{5}{9}\times\frac{7}{4}\)
\(=\frac{35}{36}\)
b) \(\frac{1}{5}:\frac{1}{3}=\frac{1}{5}\times\frac{3}{1}\)
\(=\frac{3}{5}\)
c) \(1:\frac{2}{3}=1\times\frac{3}{2}\)
\(=\frac{3}{2}\)
ủng hộ tớ nha
a=3/4*7/6=1/2+1/3=5/6
b=5/3*9/15=1-1/5=4/5
c=1/4*1/5=1/20:1/3=3/20
d=7/9:14/15=5/6*1/2=5/12
Tính
a ) 1/2 x 1/4 x 1/6
= 1/8 x 1/6
= 1/48
b ) 1/2 x 1/4 : 1/6
= 1/8:1/6
3/4
c ) 1/2 : 1/4 x 1/6
= 2 x 1/6
= 1/3
tk mk nha ( nếu đúng )
hihi mơn nha !!!!!!!!!
\(\frac{2}{6}+\frac{9}{24}\)
\(=\frac{8}{24}+\frac{9}{24}\)
\(=\frac{17}{24}\)
Tương Tự vs các câu còn lại
\(\frac{7}{2}+\frac{1}{3}-\frac{5}{2}\)
\(=\left(\frac{7}{2}-\frac{5}{2}\right)+\frac{1}{3}\)
\(=1+\frac{1}{3}\)
\(=\frac{4}{3}\)
CHẤM PHẨY LÀ GÌ
a)3/5:3/4=12/15=4/5
2/5:3/10=20/15=4/3
9/8:3/4= 32/24=4/3
b)1/4:1/2=2/4=1/2
1/8:1/6=6/8=3/4
1/5:1/10=10/5=2/1=2
kích cho mình nha