y - 3/11 = 9/22
y - 3/11 = 9/22
y = 9/22 + 3/11
y = 9/22 + 6/22
y = 15/22
a, y+3/4=4/5
b, y-3/11=9/22
c, 9/2-y=2/9
a) \(y+\frac{3}{4}=\frac{4}{5}\)
\(y=\frac{4}{5}-\frac{3}{4}\)
\(y=\frac{1}{20}\)
b) \(y-\frac{3}{11}=\frac{9}{22}\)
\(y=\frac{9}{22}-\frac{3}{11}\)
\(y=\frac{3}{22}\)
c) \(\frac{9}{2}-y=\frac{2}{9}\)
\(y=\frac{9}{2}-\frac{2}{9}\)
\(y=\frac{77}{18}\)
a, y + 3/4 = 4/5
y = 4/5 - 3/4
y = 1/20
b, y - 3/11 = 9/22
y = 9/22 + 3/11
y = 15/22
c, 9/2 - y = 2/9
y = 9/2 - 2/9
y = 77/18
ủng hộ nha
y+3/4=4/5
y-3/11=9/22
9/2-y=2/9
Giải giúp mk!
\(y+\frac{3}{4}=\frac{4}{5}\)
\(y=\frac{4}{5}-\frac{3}{4}\)
\(y=\frac{1}{20}\)
Vậy y = 1/20
\(y-\frac{3}{11}=\frac{9}{22}\)
\(y=\frac{9}{22}+\frac{3}{11}\)
\(y=\frac{15}{22}\)
Vậy y = 15/22
\(\frac{9}{2}-y=\frac{2}{9}\)
\(y=\frac{9}{2}-\frac{2}{9}\)
\(y=\frac{77}{18}\)
Vậy y = 77/18
a) y + 3/4 = 4/5 b) y - 3/11 = 9/22 c) 9/2 - y = 2/9
a) y = 4/5-3/4 = 1/20
b) y = 9/22 + 3/11 =15/22
c)y = 9/2 - 2/9 = 77/18
{(-5/7)-7/9+9/11-11/13}x(3-3/4)
(10/21+14/27-6/11+22/39):(2-2/3)
16/3 : 22/9 - 24/121 x 11/9 + 8/11 x1/3 tính nhanh
a, 7/11 - ( 3/5 + 7/11 )
b, ( 11/22 + 5/11 ) - 19/22
c, 2/9 . 4/5 + 2/9 . 14/5
d, -3/2 . 7/10 -3/2 . 1/10
e, ( 0,75 - 1 + 1/4 ) : ( 1515/1616 + 1616/1717 )
a) \(\frac{7}{11}-\left(\frac{3}{5}+\frac{7}{11}\right)=-\frac{3}{5}\)
b) \(\left(\frac{11}{22}+\frac{5}{11}\right)-\frac{19}{22}=\frac{1}{11}\)
c) \(\frac{2}{9}.\frac{4}{5}+\frac{2}{9}.\frac{14}{5}=\frac{4}{5}\)
d) \(-\frac{3}{2}.\frac{7}{10}-\frac{3}{2}.\frac{1}{10}=-\frac{6}{5}\)
e) \(\left(0,75-1+\frac{1}{4}\right):\left(\frac{1515}{1616}+\frac{1616}{1717}\right)=0\)
tìm số nguyên x,y,z ;
a) 6/5 = 18/x
b) 3/4 = -21/x
c) x/4 = 21/28
d) -8/2x = 3/-9
e) -4/11 = x/22 = 40/z
f) - 3/4 = x/20 = 21 / y
g) -4/8 = x/-10 = -7/y = z/-24
h) x/4 = 9/x
\(a.\dfrac{6}{5}=\dfrac{18}{x}\Rightarrow x=\dfrac{18\cdot5}{6}=15\\ \text{Vậy}\text{ }x=15.\)
\(b.\dfrac{3}{4}=\dfrac{-21}{x}\Rightarrow x=\dfrac{-21\cdot4}{3}=28\\ \text{ }\text{ }\text{ }\text{ }\text{Vậy }x=28.\)
\(c.\dfrac{x}{4}=\dfrac{21}{28}\Rightarrow x=\dfrac{21\cdot4}{28}=3\\ \text{Vậy }x=3.\)
\(d.\dfrac{-8}{2x}=\dfrac{3}{-9}\Rightarrow x=\dfrac{-8\cdot\left(-9\right)}{3}:2=12\\ \text{Vậy }x=12.\)
\(e.\dfrac{-4}{11}=\dfrac{x}{22}=\dfrac{40}{z}\\ \Rightarrow x=\dfrac{-4\cdot22}{11}=-8\\ \Rightarrow z=\dfrac{22\cdot40}{-8}=-110\\ \text{Vậy }x=-8;z=-110.\)
\(f.\dfrac{-3}{4}=\dfrac{x}{20}=\dfrac{21}{y}\\ \Rightarrow x=\dfrac{-3\cdot20}{4}=-15\\ \Rightarrow y=\dfrac{21\cdot20}{-15}=-28\\ \text{Vậy }x=-15;y=-28.\)
\(g.\dfrac{-4}{8}=\dfrac{x}{-10}=\dfrac{-7}{y}=\dfrac{z}{-24}\\ \Rightarrow x=\dfrac{-4\cdot\left(-10\right)}{8}=5\\ \Rightarrow y=\dfrac{-7\cdot\left(-10\right)}{5}=14\\ \Rightarrow z=\dfrac{-7\cdot\left(-24\right)}{14}=12\\ \text{Vậy }x=5;y=14;z=12.\)
\(h.\dfrac{x}{4}=\dfrac{9}{x}\\ \Rightarrow x\cdot x=9\cdot4\\ \Rightarrow x\cdot x=36\\ \Rightarrow x\cdot x=6\cdot6\\ \text{Vậy }\text{cả hai }x=6.\)
tìm x
x-3/11=9/22
<=> x = 9/22 + 3/11 = 9/22 + 6/22 = 15/22