Question

x+3/4=9 1/7:x=2/7

x-2/3=7/2 x+3/4=5/3

Gấp 😥

Answer 1

\(x+\dfrac{3}{4}=9\)

\(x=\dfrac{9}{1}-\dfrac{3}{4}\)

\(x=\dfrac{36-3}{4}=\dfrac{33}{4}\)

 

\(\dfrac{1}{7}:x=\dfrac{2}{7}\)

\(x=\dfrac{2}{7}:\dfrac{1}{7}\)

\(x=\dfrac{2}{7}.\dfrac{7}{1}=\dfrac{14}{7}=2\)

Answer 2

\(x-\dfrac{2}{3}=\dfrac{7}{2}\)

\(x=\dfrac{7}{2}-\dfrac{2}{3}\)

\(x=\dfrac{21-4}{6}=\dfrac{17}{6}\)

\(x+\dfrac{3}{4}=\dfrac{5}{3}\)

\(x=\dfrac{5}{3}-\dfrac{3}{4}\)

\(x=\dfrac{20-9}{12}=\dfrac{11}{12}\)