Question

x + 3/4 x 7/10 = 53/40

Answer 1

\(x+\dfrac{21}{40}=\dfrac{53}{40}\)

\(x=\dfrac{4}{5}\)

Answer 2

\(x=\dfrac{53}{40}\times\dfrac{10}{7}-\dfrac{3}{4}=\dfrac{8}{7}\)

Answer 3

\(x+\dfrac{3}{4}\times\dfrac{7}{10}=\dfrac{53}{40}\)

\(\Leftrightarrow x+\dfrac{21}{40}=\dfrac{53}{40}\)

\(\Leftrightarrow x=\dfrac{53}{40}-\dfrac{21}{40}\)

\(\Leftrightarrow x=\dfrac{4}{5}\)

\(\)