\(\dfrac{12}{x}=\dfrac{2}{3}\)

\(\dfrac{1}{x}=\dfrac{2}{3}:12\)

\(\dfrac{1}{x}=\dfrac{1}{18}\)

\(x=18\)

\(\dfrac{1}{2}+\dfrac{2}{3}+\dfrac{2}{3}=\dfrac{1}{2}+\dfrac{4}{3}=\dfrac{3}{6}+\dfrac{8}{6}=\dfrac{11}{6}\)

\(300\times\dfrac{4}{3}=400\)

|9| < |-14|               |-7,5| > -7,5

0.014012 m³

1 She asked me if I went to the gym often.

2  Anna said that she would have a math test the next week.

- 5(6 + x) = -70

-30 - 5x = -70

-5x = -40

x = 8