Question

\(\frac{1}{10}\)CỘNG \(\frac{4}{20}\) CỘNG 9/30 CỘNG 16/40 CỘNG 25/50 CỘNG 36/60 - X = 2

Answer 1

\(\frac{1}{10}+\frac{4}{20}+\frac{9}{30}+\frac{4}{16}+\frac{25}{50}+\frac{36}{60}-x=2\)

\(\frac{1}{10}+\frac{1}{5}+\frac{3}{10}+\frac{1}{4}+\frac{1}{2}+\frac{3}{5}-x=2\)

\(\left(\frac{1}{10}+\frac{1}{5}+\frac{3}{10}+\frac{1}{4}+\frac{1}{2}+\frac{3}{5}\right)-x=2\)

\(\frac{39}{20}-x=2\)

\(x=\frac{39}{20}-2\)

\(x=\frac{-1}{20}\)