Помоги:А] (1-1/3-1/5) *15 Б] 42, 3- (15, 7-12, 9) *0, 3 В] (7-11) (-2-5)-33

[latex]A) (1- \frac{1}{3} - \frac{1}{5} )*15= \frac{15-5-3}{15} *15 = \frac{7}{15} *15=7[/latex] Б) [latex]42,3 - (15,7-12,9)*0,3=42.3-2,8*0,3=42,3-0,84=41,46[/latex] В) [latex](7-11)(-2-5)-33=(-4)(-7)-33=28-33=-5[/latex]