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a) \(x+4\frac{1}{5}=5\frac{2}{3}\times10\frac{1}{2}\)
\(x+\frac{21}{5}=\frac{17}{3}\times\frac{21}{2}\)
\(x+\frac{21}{5}=\frac{119}{2}\)
\(x=\frac{119}{2}-\frac{21}{5}\)
\(x=\frac{553}{10}\)
b) \(\frac{24}{5}-x=2\frac{1}{4}:1\frac{3}{4}\)
\(\frac{24}{5}-x=\frac{9}{4}:\frac{7}{4}\)
\(\frac{24}{5}-x=\frac{9}{4}.\frac{4}{7}\)
\(\frac{24}{5}-x=\frac{9}{7}\)
\(x=\frac{24}{5}-\frac{9}{7}\)
\(x=\frac{123}{35}\)
\(x+3\frac{1}{2}+x=24\frac{1}{4}\\ x+x+\frac{7}{2}=\frac{97}{4}\\ x+x=\frac{97}{4}-\frac{7}{2}\\ x+x=\frac{97}{4}-\frac{14}{4}\)
\(x+x=\frac{83}{4}\\ x=\sqrt{\frac{83}{4}}\)
x + 3/1/2 + x = 24/1/4
2x + 3/1/2 = 24/1/4
2x = 24/1/4 - 3/1/2
2x = 20/3/4
x = 20/3/4 : 2
x = 10/3/8 ( Cách 1 )
x + 3/1/2 + x = 24/1/4
= x + 3,5 + x = 24,25
2x + 3,5 = 24,25
2x = 24,25 - 3,5
2x = 20,75
x = 20,75 : 2
x = 10,375
= 10375/1000
x = 10/3/8 ( Cách 2 )
Bạn có thể chọn 1 trong 2 cách trên
Chúc bạn học tốt !
a, \(x-\frac{1}{3}=\frac{3}{4}\)
\(x=\frac{3}{4}+\frac{1}{3}\)
\(x=\frac{9}{13}+\frac{4}{12}=\frac{13}{12}\)
a. \(x=\frac{3}{4}+\frac{1}{3}\)
\(x=\frac{10}{12}\)
b. \(x+\frac{5}{2}=\frac{15}{4}\)
\(x=\frac{15}{4}-\frac{5}{2}\)
\(x=\frac{5}{4}\)
c. \(x:\frac{1}{4}=\frac{37}{2}\)
\(x=\frac{37}{2}\)x \(\frac{1}{4}\)
\(x=\frac{37}{8}\)
d. \(x=\frac{2}{9}:\frac{2}{3}\)
\(x=\frac{2}{9}\)x \(\frac{3}{2}\)
\(x=\frac{1}{3}\)
Ta có : \(\frac{1}{4}+\frac{1}{3}:\frac{1}{x}=\frac{11}{12}\)
\(\Rightarrow\frac{1}{3}:\frac{1}{x}=\frac{11}{12}-\frac{1}{4}\)
\(\frac{1}{3}:\frac{1}{x}=\frac{2}{3}\)
\(\frac{1}{x}=\frac{1}{3}:\frac{2}{3}\)
\(\frac{1}{x}=\frac{1}{3}\times\frac{3}{2}\)
\(\frac{1}{x}=\frac{1}{2}\)
=> x = 2
a) \(\frac{x\div3-16}{2}+21=38\)
\(\frac{x\div3-16}{2}=38+21\)
\(\frac{x\div3-16}{2}=59\)
\(x\div3-16=59.2\)
\(x\div3-16=118\)
\(x\div3=118+16\)
\(x\div3=134\)
\(x=134.3\)
\(x=402\)
b) \(\frac{1}{4}+\frac{1}{3}\div\frac{1}{x}=\frac{11}{12}\)
\(\frac{1}{3}\div\frac{1}{x}=\frac{11}{12}-\frac{1}{4}\)
\(\frac{1}{3}\div\frac{1}{x}=\frac{2}{3}\)
\(\frac{1}{x}=\frac{1}{3}\div\frac{2}{3}\)
\(\frac{1}{x}=\frac{1}{2}\)
Vậy x = ....
a) \(\frac{1}{3}-\frac{2}{x}=\frac{1}{6}\)
=> \(\frac{2}{x}=\frac{1}{3}-\frac{1}{6}\)
=> \(\frac{2}{x}=\frac{1}{6}\)
\(\Rightarrow x=12\)
Vậy x = 12
b) \(\frac{x-1}{2}=\frac{3}{4}\)
\(\Rightarrow\left(x-1\right).4=2.3\)
=> 4x - 4 = 6
=> 4.(x-1) = 6
=> x-1 = 6:4 = 1,5
=> x = 1,5 + 1
=> x = 2,5
Vậy x = 2,5
what the hell