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\(a)x+\frac{2}{3}=\frac{5}{6}\)
\(x=\frac{5}{6}-\frac{2}{3}\)
\(x=\frac{5}{6}-\frac{4}{6}=\frac{1}{6}\)
\(b)x-\frac{3}{5}=\frac{2}{7}+\frac{1}{5}\)
\(x=\frac{3}{5}-\frac{17}{35}\)
\(x=\frac{21}{35}-\frac{17}{35}\)
\(x=\frac{4}{35}\)
\(c)x\div\frac{9}{11}=\frac{5}{22}\)
\(x=\frac{5}{22}\times\frac{9}{11}\)
\(x=\frac{45}{242}\)
\(d)\frac{3}{5}\times x=\frac{3}{10}\)
\(x=\frac{3}{10}\div\frac{3}{5}\)
\(x=\frac{1}{2}\)
\(a)\)\(x+\frac{2}{3}=\frac{5}{6}\)
\(x=\frac{5}{6}-\frac{2}{3}\)
\(x=\frac{1}{6}\)
\(b)\)\(x-\frac{3}{5}=\frac{2}{7}+\frac{1}{5}\)
\(x-\frac{3}{5}=\frac{17}{35}\)
\(x=\frac{17}{35}+\frac{3}{5}\)
\(x=\frac{38}{35}\)
\(\left(x-12,5\right):\frac{3}{4}=\frac{8}{5}\)
\(x-12,5=\frac{8}{5}.\frac{3}{4}\)
\(x-12,5=\frac{6}{5}\)
\(x=\frac{6}{5}+12,5\)
\(x=\frac{137}{10}\)
\(\left(x-\frac{2}{5}\right)\times\frac{5}{11}=\frac{75}{22}\)
\(x-\frac{2}{5}=\frac{75}{22}:\frac{5}{11}\)
\(x-\frac{2}{5}=\frac{15}{2}\)
\(x=\frac{15}{2}+\frac{2}{5}\)
\(x=\frac{79}{10}\)
\(\dfrac{\dfrac{22}{15}}{11-x}\) + \(\dfrac{2}{3}\) = \(\dfrac{7}{5}\)
\(\dfrac{\dfrac{22}{15}}{11-x}\) = \(\dfrac{7}{5}\) - \(\dfrac{2}{3}\)
\(\dfrac{\dfrac{22}{15}}{11-x}\) = \(\dfrac{11}{15}\)
11 - \(x\) = \(\dfrac{22}{15}\) : \(\dfrac{11}{15}\)
11 - \(x\) = 2
\(x\) = 11 - 2
\(x\) = 9
a) 4/9.x=25/18:2/3
4/9.x=25/18.3/2
4/9.x=75/36
x=75/36:4/9
x=75/36x4/9
x=675/144
b)x:4/5=25/8:5/4
x:4/5=25/8x4/5
x:4/5=100/40
x:4/5=5/2
x=5/2x4/5
x=20/10
x=2/1=2
c)22/5:x=44/5:5/2
22/5:x=44/5x2/5
22/5:x=88/25
x=88/25:22/5
x=88/25x22/5
x=440/550
x=4/5
h nk
5 x X - 8 - 22
5 x X = 22 + 8
5 x X = 30
X = 30 : 5
X = 6
Chúc bạn học tốt!!!
Sai đầu bài nha
mik ko thấy x đâu hết
sửa lại đầu bài mik lm cho ^^
oke
(x - 3) x 5 = 22
x - 3 = 22 : 5
x - 3 = 4,4
x = 4,4 - 3
x = 1,4
Chúc bạn học tốt :>