[tex][ (\frac{27}{25}-\frac{1}{2}*\frac{21}{25})*\frac{25}{3}-1]*3013-10^3= \\\\ = [(\frac{27}{25}^{(2}-\frac{21}{50})*\frac{25}{3}-1]*3013-1000= \\\\ = [(\frac{54-21}{50})*\frac{25}{3} -1]*3013-1000= \\\\ = (\frac{\not 33}{\not 50}*\frac{\not 25}{\not 3}-1)*3013-1000= \\\\ = (\frac{11}{2}-1^{(2})*3013-1000= \\\\ = \frac{11-2}{2}*3013-1000= \\\\ = \frac{9}{2} *3013-1000= \\\\= \frac{27117}{2}-1000^{(2}= \\\\= \frac{27117-2000}{2} = \\\\ =\frac{25117}{2} \to 12558,5[/tex]
