3. Решить уравнение: 5 7 1) 6 - x = 18 3 5 2) a+48 =98

3. Решить уравнение:

1) $$ \frac{5}{6} - x = \frac{7}{18} $$

$$ x = \frac{5}{6} - \frac{7}{18} $$

$$ x = \frac{5 \cdot 3}{6 \cdot 3} - \frac{7}{18} $$

$$ x = \frac{15}{18} - \frac{7}{18} $$

$$ x = \frac{15-7}{18} $$

$$ x = \frac{8}{18} = \frac{4}{9} $$

2) $$ a + 4\frac{3}{8} = 9\frac{5}{8} $$

$$ a = 9\frac{5}{8} - 4\frac{3}{8} $$

$$ a = (9 - 4) + (\frac{5}{8} - \frac{3}{8}) $$

$$ a = 5 + \frac{2}{8} $$

$$ a = 5\frac{1}{4} $$

Ответ: 1) $$\frac{4}{9}$$, 2) $$5\frac{1}{4}$$