\( \frac{7}{19}-x+\frac{9}{19}\) при \( x=\frac{4}{19}\) \( \frac{7}{19}-x+\frac{9}{19}=\) при \( x=\frac{13}{19}\) \( \frac{7}{19}-x+\frac{9}{19}=\)

Задание

Найдите значение выражения

\(\displaystyle \frac{7}{19}-x+\frac{9}{19}\)

при \(\displaystyle x=\frac{4}{19}\)

\(\displaystyle \frac{7}{19}-x+\frac{9}{19}=\)[ ]

при \(\displaystyle x=\frac{13}{19}\)

\(\displaystyle \frac{7}{19}-x+\frac{9}{19}=\)[ ]