a+2/44=24/12 nè các bạn /là phần nha! tìm a?
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c1
a,3/15 = 3:3/15:3 = 15
33/44 = 33:11/44:11 = 34
2/8 = 2:2/8:2 = 1/4
b,9/12 =9:3/12:3 = 34
24/36 =24:12/36:12 = 23
3/8 = 3:1/8:1 = 3/8
c2
a) =12x(4+6)/24
= 12x10/24
=120/24
=5
b,16x8-16x2/12x4
=16x(8-2)/48
=16x6/48
=2
c3
5/8=45/72
20/15=4/3=96/72
24/32=3/4=54/72
15/18=5/6=60/72
77/99=7/9=56/72
c4
2/3=2/3
12/15=4/5
24/18=4/3
16/48=1/3
75/100=3/4
30/45=2/3
12/36=1/3
20/15=4/3
các phân số lớn hơn 1 luôn có mẫu số bé hơn tử số
vậy các số lớn hơn 1 là 24/18,20/15
k mk nha thank mọi ng'
a, \(\frac{3}{15}=\frac{1}{5}=\frac{4}{20}\); \(\frac{33}{44}=\frac{3}{4}=\frac{15}{20}\); \(\frac{2}{8}=\frac{1}{4}=\frac{5}{20}\)
b, \(\frac{9}{12}=\frac{3}{4}=\frac{18}{24}\); \(\frac{24}{36}=\frac{2}{3}=\frac{16}{24}\); \(\frac{3}{8}=\frac{9}{24}\)
Bài 2 :
a,\(\frac{12x4+12x6}{24}=\frac{12x\left(4+6\right)}{24}=\frac{1x10}{2}=\frac{10}{2}=\frac{5}{1}\)
b, \(\frac{16x8-16x2}{12}=\frac{16x\left(8-2\right)}{12}=\frac{8x6}{6}=\frac{8}{1}\)
\(A=\frac{132639}{173451}\)
\(A=\frac{132639:10203}{173451:10203}\)
\(A=\frac{13}{17}\)
\(B=\frac{16515}{20919}\)
\(B=\frac{16515:1101}{20919:1101}\)
\(B=\frac{15}{19}\)
\(a+\frac{2}{44}=\frac{24}{12}\)
\(a=\frac{24}{12}-\frac{2}{44}\)
\(a=\frac{43}{22}\)
Vậy \(a=\frac{43}{22}\)
\(\frac{a+2}{44}=\frac{24}{12}\Leftrightarrow\left(a+2\right).12=44.24\Rightarrow a+2=\frac{44.24}{12}=\frac{44.2.12}{12}=44.2=88\Rightarrow a=86\)
Ta có:\(a+\frac{2}{44}=\frac{24}{12}\)
\(a=\frac{24}{12}-\frac{2}{44}\)
\(a=\frac{43}{22}\)
Ta có : a + 2/44 =24/12
a=24/12-2/44
a=43/22
Vậy a=43/22
A,-3/-7+5/19+-4/7
=(-3/-7+-4/7)+5/19
=-1/7+5/19=16/133
B,-13/24+-5/24+7/21
=-3/4+7/21=-5/12
C,-5/13+(-8/13+1)
=(-5/13+-8/13)+1
=-1+1=0
D,2/3+(3/8+-2/3)
=(2/3+-2/3)+3/8
=0+3/8=3/8
E,(-3/4+5/8)+-1/8
=-1/8+1/8=0
\(\frac{3}{15}\)= \(\frac{3:3}{15:3}\) = \(\frac{1}{5}\)
\(\frac{33}{44}\)= \(\frac{33:11}{44:11}\)= \(\frac{3}{4}\)
\(\frac{2}{8}\)= \(\frac{2:2}{8:2}\)= \(\frac{1}{4}\)
\(\frac{1}{5}\)= \(\frac{1\times4}{5\times4}\)= \(\frac{4}{20}\)
\(\frac{3}{4}\)=\(\frac{3\times5}{4\times5}\)= \(\frac{15}{20}\)
\(\frac{1}{4}\)= \(\frac{1\times5}{4\times5}\)= \(\frac{5}{20}\)
\(\frac{9}{12}\)=\(\frac{9:3}{12:3}\) = \(\frac{3}{4}\)
\(\frac{24}{36}\)=\(\frac{24:12}{36:12}\)= \(\frac{2}{3}\)
\(\frac{3}{8}\)= \(\frac{3:1}{8:1}\)= \(\frac{3}{8}\)
\(\frac{3}{4}\)=\(\frac{3\times6}{4\times6}\)= \(\frac{18}{24}\)
\(\frac{2}{3}\)=\(\frac{2\times8}{3\times8}\)=\(\frac{16}{24}\)
\(\frac{3}{8}\)= \(\frac{3\times3}{8\times3}\)=\(\frac{9}{24}\)
3/15= 1/5; 33/44=3/4; 2/8= 1/4
1/5= 1x 4/ 5x4= 4/20; 3/4= 3x 5/ 4x 5= 15/20; 1/4= 1x 5/ 4x 5= 5/20
9/12= 3/4; 24/36= 2/3; 3/8 không rút gọn được
3/4= 3x 6/ 4x6= 18/24; 2/3= 2x 8/ 3x 8= 16/24; 3/8= 3x 3/ 8x 3= 9/24
a=24/12-2/44
a=2-1/22
a=44/22-1/22
a=43/22