Задание 4. Вычисли:

a) |-4| + |5| = 4 + 5 = 9 б) |-1,8| : $$\frac{3}{25}$$ = 1,8 : $$\frac{3}{25}$$ = $$\frac{18}{10}$$ * $$\frac{25}{3}$$ = $$\frac{6}{2}$$ * $$\frac{5}{1}$$ = 3 * 5 = 15 в) |-5,6| - |-1| = 5,6 - 1 = 4,6 г) |2,25| - |-1,75| = 2,25 - 1,75 = 0,5 д) |-24,5| + |0| = 24,5 + 0 = 24,5 е) |-3$$\frac{8}{9}$$| - |-0,54| = 3$$\frac{8}{9}$$ - 0,54 = $$\frac{35}{9}$$ - $$\frac{54}{100}$$ = $$\frac{35}{9}$$ - $$\frac{27}{50}$$ = $$\frac{35*50 - 27*9}{450}$$ = $$\frac{1750-243}{450}$$ = $$\frac{1507}{450}$$ = 3$$\frac{157}{450}$$