3. Найдите значение выражения: а) |-3,6| : |-18|; б) |-$$1\frac{3}{5}$$| $$\cdot$$ |$$3\frac{3}{4}$$|; в) |2,4| + |-$$2\frac{3}{5}$$|

а) |-3,6| : |-18| = 3,6 : 18 = 0,2 б) |-$$1\frac{3}{5}$$| $$\cdot$$ |$$3\frac{3}{4}$$| = $$1\frac{3}{5}$$ $$\cdot$$ $$3\frac{3}{4}$$ = $$\frac{8}{5}$$ $$\cdot$$ $$\frac{15}{4}$$ = $$\frac{8 \cdot 15}{5 \cdot 4}$$ = $$\frac{2 \cdot 3}{1 \cdot 1}$$ = 6 в) |2,4| + |-$$2\frac{3}{5}$$| = 2,4 + $$2\frac{3}{5}$$ = 2,4 + 2,6 = 5