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em hoc lop 3

a)15/24; 14/24

b)68/60; 87/60

a) 

\(\frac{5}{6}=\frac{5X4}{6X4}=\frac{20}{24}\)

\(\frac{7}{8}=\frac{7X3}{8X3}=\frac{21}{24}\)

b)

\(\frac{22}{15}=\frac{22X5}{15X5}=\frac{110}{75}\)

\(\frac{17}{25}=\frac{17X3}{25X3}=\frac{51}{75}\)

a)\(\frac{21}{24};\frac{28}{24};\frac{72}{24}\)

b)\(\frac{6}{12};\frac{8}{12};\frac{9}{12};\frac{60}{12}\)

#H

a)$\frac{21}{24};\frac{28}{24};\frac{72}{24}$

b)$\frac{6}{12};\frac{8}{12};\frac{9}{12};\frac{60}{12}$

:)

Phân số 21/24 và 10/24

tk mk nha ^_^

\(\frac{5}{12}=\frac{5\times2}{12\times2}=\frac{10}{24};\frac{9}{8}=\frac{9\times3}{8\times3}=\frac{27}{24}\)

tớ cảm ơn

Câu 1:

\(\frac{3}{8}=\frac{3x3}{8x3}=\frac{9}{24}\)

\(\frac{5}{6}=\frac{5x4}{6x4}=\frac{20}{24}\)

Câu 2:

\(\frac{5}{8}=\frac{5x3}{8x3}=\frac{15}{24}\)

\(3=\frac{72}{24}\)

tích cho mik thì mik trả lời

a \(\dfrac{5}{7};\dfrac{28}{7}\)

b \(\dfrac{27}{33};\dfrac{165}{33}\)

c \(\dfrac{16}{36};\dfrac{21}{36}\)

\(\dfrac{5}{6}=\dfrac{20}{24}\)

\(\dfrac{9}{8}=\dfrac{27}{24}\)

5/6 = 5 x 4/6 x 4 = 20/24

9/8 = 9 x 3/8 x 3 = 27/24

Tick xanh mình nhe!

7098288-999929=?

a, Phân số đó là \(\frac{7}{9}=\frac{28}{36}\) và \(\frac{5}{12}=\frac{15}{36}\)

b, Phân số đó là \(\frac{4}{7}=\frac{8}{14}\) và \(\hept{\begin{cases}3=\frac{21}{7}\\3=\frac{42}{14}\end{cases}}\)

a,  Phân số đó là 

$\frac{7}{9}=\frac{28}{36}$ và $\frac{5}{12}=\frac{15}{36}$

b, Phân số đó là $\frac{4}{7}=\frac{8}{14}$ và $\text{hept}\{\begin{array}{c}3=\frac{21}{7}\\ 3=\frac{42}{14}\end{array}$