7.计算:
(1)(-2)+(-3)-(+1)-(-6)
(2)2×(-3)-48÷(-12+4)
(3)1$\frac{2}{3}×({-\frac{4}{9}})×({-2.5})÷({-\frac{25}{3}})$
(4)$-{1^{2015}}-12×(\frac{2}{3}+\frac{1}{4}-\frac{5}{6})$
(5)$|{-1\frac{1}{5}}|÷({\frac{1}{3}-\frac{1}{5}})-\frac{1}{3}×{(-3)^2}$
(6)-32×$\frac{1}{3}-\frac{1}{2}×[{3×{{({-\frac{2}{3}})}^2}-{{({-1})}^4}}]+\frac{1}{4}÷{({-\frac{1}{2}})^3}$.