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a) \(\Leftrightarrow\dfrac{3}{2}:x=\dfrac{1}{2}\\ \Leftrightarrow x=\dfrac{3}{2}:\dfrac{1}{2}\\ \Leftrightarrow x=3\)
b) \(\Leftrightarrow x=\dfrac{7}{9}-\dfrac{2}{3}\\ \Leftrightarrow x=\dfrac{1}{9}\)
c) \(\Leftrightarrow x=\dfrac{8}{7}:\dfrac{6}{7}\\ \Leftrightarrow x=\dfrac{4}{3}\)
d) \(\Leftrightarrow x=\dfrac{9}{5}-\dfrac{3}{7}\\ \Leftrightarrow x=\dfrac{48}{35}\)
a) x = 3
b) x = \(\dfrac{1}{9}\)
c) x = \(\dfrac{4}{3}\)
d)\(\dfrac{48}{35}\)
\(\Rightarrow x-1=\dfrac{6}{7}+\dfrac{1}{7}\times\left(\dfrac{2}{7}+\dfrac{5}{7}\right)=\dfrac{6}{7}+\dfrac{1}{7}\times1\\ \Rightarrow x-1=\dfrac{6}{7}+\dfrac{1}{7}=1\\ \Rightarrow x=1+1=2\)
a ) 7/6 - 5/7 : 5/7 = 7/6 - 1 = 1/6
b) y x 3/7 = 1/2
y = 1/2 : 3/7
y = 7/6
a)\(\dfrac{7}{6}-\dfrac{5}{7}:\dfrac{5}{7}\)
\(=\dfrac{7}{6}-\dfrac{5}{7}.\dfrac{7}{5}\)
\(=\dfrac{7}{6}-1\)
\(=\dfrac{1}{6}\)
b) \(y.\dfrac{3}{7}=\dfrac{1}{2}\)
\(y=\dfrac{1}{2}:\dfrac{3}{7}\)
\(y=\dfrac{1}{2}.\dfrac{7}{3}\)
\(y=\dfrac{7}{6}\)