$-703-482$

$\left(-7\right)+\left(-8\right)-\left(-4\right)$

$-\:4+\left(-\:2\:+\:3\:-\:9\right)-\left(-\:3\:-\:5\right)$

$\frac{n+2}{4^n+2}\cdot x^n$

$\left(2x+1\right)^2-\left(y+5\right)^2$

$0,5x-3,2y+5,4x+6,4y+5,1x+4$

$\frac{\left(-17+2\right)}{\left(-5\right)}+\frac{\left(\left(-2\right)\cdot\left(-6\right)\cdot\left(-1\right)\right)}{\frac{\left(-2+4\right)}{\left(-3\right)}}$