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\(\frac{15}{26}\cdot\frac{x}{15}=\frac{16}{52}\)
\(\frac{x}{15}=\frac{16}{52}:\frac{15}{26}\)
\(\frac{x}{15}=\frac{8}{15}\)
Ta có: 15/26 . X/15= 16/52
X/15= 16/52: 15/26
X/15= 8/15
=> x =8
\(\frac{35}{6}+X=\frac{3}{4}\times5\frac{1}{2}\)
\(\frac{35}{6}_{ }+X=\frac{33}{8}\)
\(X=\frac{33}{8}-\frac{35}{6}\)
\(X=\frac{-41}{24}\)
\(\frac{3}{4}x\frac{5}{6}-\frac{1}{6}=\frac{11}{24}\)
\(4\frac{8}{5}-\frac{2}{3}=\frac{28}{5}-\frac{2}{3}=\frac{74}{15}\)
1/3x + 2/3(x-2) = 45
1/3x + 2/3x - 4/3 = 45
x= 45+4/3
x= 139/3
1/3 x + 2/3 (x-2) = 45
1/3x + 2/3x - 4/3 = 45
x = 45 + 4/3
x = 139/3
>_< học tốt
tích giùm mk nha cảm ơn nhìu
\(\frac{5}{9}\times\frac{12}{7}=\frac{5\times12}{9\times7}=\frac{5\times4\times3}{3\times3\times7}=\frac{20}{21}\)
\(\frac{6}{5}:\frac{8}{3}=\frac{6}{5}\times\frac{8}{3}=\frac{2\times3\times8}{5\times3}=\frac{16}{5}\)
\(\frac{9}{20}\times\frac{5}{12}=\frac{3\times3\times5}{4\times5\times4\times3}=\frac{3}{16}\)
\(\frac{15}{16}:\frac{25}{24}=\frac{15}{16}\times\frac{24}{25}=\frac{3\times5\times4\times2\times3}{4\times2\times2\times5\times5}=\frac{9}{10}\)
\(14\times\frac{5}{21}=\frac{2\times7\times5}{3\times7}=\frac{10}{3}\)
\(10:\frac{5}{3}=10\times\frac{3}{5}=\frac{2\times5\times3}{5}=6\)
\(\frac{5}{3}:10=\frac{5}{3}\times\frac{1}{10}=\frac{5}{3\times2\times5}=\frac{1}{6}\)
Trả lời:
\(\frac{3}{5}\)x \(\frac{2}{7}\)x \(\frac{5}{6}\)= \(\frac{1}{7}\)
Chúc bn học tốt
K mik nha
\(\frac{30}{210}\)rút gọn còn\(\frac{1}{7}\)
Chúc bạn học tốt
\(\frac{22}{x}-\frac{3}{2}\times2=\frac{1}{6}\)
\(\frac{22}{x}-\left(\frac{3}{2}\times2\right)=\frac{1}{6}\)
\(\frac{22}{x}-\frac{3\times2}{2}=\frac{1}{6}\)
\(\frac{22}{x}-3=\frac{1}{6}\)
\(\frac{22}{x}=\frac{1}{6}+3=\frac{1}{6}+\frac{3}{1}=\frac{1}{6}+\frac{18}{6}=\frac{19}{6}\)
\(\Rightarrow x=22\div\frac{19}{6}\)
\(\Rightarrow x=\frac{22\times6}{19}=\frac{132}{19}\)