\(2\dfrac{3}{4}=\dfrac{2\times4+3}{4}=\dfrac{11}{4}\\ 3\dfrac{4}{5}=\dfrac{3\times5+4}{5}=\dfrac{19}{5}\\ 4\dfrac{3}{5}=\dfrac{4\times5+3}{5}=\dfrac{23}{5}\\ 11\dfrac{12}{13}=\dfrac{11\times13+12}{13}=\dfrac{155}{13}\\ 12\dfrac{11}{13}=\dfrac{12\times13+11}{13}=\dfrac{167}{13}\\ 3\dfrac{3}{5}=\dfrac{3\times5+3}{5}=\dfrac{18}{5}\)

2\(\dfrac{3}{4}\)=\(\dfrac{11}{4}\)

3\(\dfrac{4}{5}\)=\(\dfrac{19}{5}\)

4\(\dfrac{3}{5}\)=\(\dfrac{23}{5}\)

11\(\dfrac{12}{13}\)=\(\dfrac{155}{13}\)

12\(\dfrac{11}{13}\)=\(\dfrac{167}{13}\)

3\(\dfrac{3}{5}\)=\(\dfrac{18}{5}\).

\(3\frac{1}{2}\) = \(3\cdot2+1\) = \(7\) ; Mẫu số giữ nguyên

Vậy ta được phân số \(\frac{7}{2}\)

Đáp số : \(\frac{7}{2}\)

= 7/2 nha pạn

nhớ cho mk ạ, cảm ơn nhìu

=7 phần 2

\(4\frac{2}{3}+2\frac{3}{4}.7\frac{3}{11}=\frac{14}{3}+\frac{11}{4}.\frac{80}{11}=\frac{14}{3}+20=\frac{14}{3}+\frac{60}{3}=\frac{74}{3}\)

\(4\frac{2}{3}+2\frac{3}{4}\times7\frac{3}{11}\)

\(=\frac{14}{3}+\frac{11}{4}\times\frac{80}{11}\)

\(=\frac{14}{3}+\frac{11\times80}{4\times11}\)

\(=\frac{14}{3}+20\)

\(=\frac{14}{3}+\frac{60}{3}\)

\(=\frac{74}{3}\)

18/25=72/100

91/4=2275/100

37/20=185/100

86/125=688/1000

71/8=8875/1000

\(1\frac{8}{25}=\frac{33}{25}=1.32\)

\(9\frac{1}{4}=\frac{37}{4}=9.25\)

\(3\frac{7}{20}=\frac{67}{20}=3.35\)

\(8\frac{6}{125}=\frac{1006}{125}=8.048\)

\(7\frac{1}{8}=\frac{57}{8}=7.125\)

a) 28/140=0.2                                               b) 2 23/75=2.3066

33/75=0.44                                                      4 216/900=4.24

261/900=0.29                                                   1 415/1250=1.332

415/1250=0.332                                               5 28/140=5.2

4 VÀ 2/3 =14/3

7 VÀ 3/11=80/11

2 VÀ 3/4=11/4

TA CÓ :14/3+11/4 nhân 80/11=74/3

TICK NHA!!!

6/5 + 1/4 bằng bao nhiêu

\(\left(a\right)3\frac{2}{4}=3x4+2=\frac{14}{4}\)

\(\left(b\right)5\frac{3}{2}=5x3+2=\frac{17}{2}\)