$\,7\,x + (\,3 - \,3\,x + \,7\,y) =$ ?

$\,-4\,x +\,7\,y \,-3$ $\,4\,x \,-7\,y +\,3$ $\,4\,x +\,7\,y +\,3$ $\,10\,x \,-7\,y \,-3$ $\,10\,x +\,7\,y +\,3$

$ \,5\,x - \,2\,\,x^2 - ( - \,4\,\,x^2 + \,3\,x )=$ ?

$\,6\,\,x^2 +\,2\,x$ $\,2\,\,x^2 +\,2\,x$ $\,-6\,\,x^2 +\,8\,x$ $\,2\,\,x^2 +\,8\,x$ $\,-6\,\,x^2 +\,2\,x$

$\,8\,x - ( - \,5\,\,x^2 - \,8 ) + \,3\,x=$ ?

$\,5\,\,x^2 +\,11\,x \,-8$ $\,-5\,\,x^2 +\,11\,x +\,8$ $\,5\,\,x^2 +\,5\,x +\,8$ $\,-5\,\,x^2 +\,11\,x \,-8$ $\,5\,\,x^2 +\,11\,x +\,8$

$ \,5\,\,x^2 - ( \,4 + \,\,x^2 + \,8\,x)=$ ?

$\,4\,\,x^2 +\,8\,x \,-4$ $\,4\,\,x^2 \,-8\,x \,-4$ $\,4\,\,x^2 +\,8\,x +\,4$ $\,6\,\,x^2 \,-8\,x \,-4$ $\,6\,\,x^2 +\,8\,x +\,4$

$\,6 + ( - \,6\,x + \,1) - ( \,3 - \,8\,x) =$ ?

$\,2\,x +\,10$ $\,2\,x +\,2$ $\,2\,x +\,4$ $\,-14\,x +\,4$

$ \,4\,x + \,8\,y - ( \,6\,x - \,6\,y)=$ ?

$\,-2\,x \,-2\,y$ $\,-2\,x +\,14\,y$ $\,-2\,x +\,2\,y$ $\,10\,x +\,14\,y$ $\,10\,x +\,2\,y$