$\,7\,x + (\,7 - \,5\,x + \,5\,y) =$ ?

$\,2\,x \,-5\,y +\,7$ $\,12\,x +\,5\,y +\,7$ $\,2\,x +\,5\,y +\,7$ $\,12\,x \,-5\,y \,-7$ $\,-2\,x +\,5\,y \,-7$

$\,8\,x - ( - \,9\,\,x^2 - \,3 ) + \,9\,x=$ ?

$\,-9\,\,x^2 +\,17\,x +\,3$ $\,9\,\,x^2 \,-\,x +\,3$ $\,9\,\,x^2 +\,17\,x +\,3$ $\,-9\,\,x^2 +\,17\,x \,-3$ $\,9\,\,x^2 +\,17\,x \,-3$

$ \,8\,x + \,9\,y - ( \,7\,x - \,5\,y)=$ ?

$\,x +\,14\,y$ $\,x +\,4\,y$ $\,15\,x +\,14\,y$ $\,x \,-4\,y$ $\,15\,x +\,4\,y$

$ \,3\,\,x^2 - ( \,8 + \,5\,\,x^2 + \,6\,x)=$ ?

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

$\,1 + ( - \,4\,x + \,3) - ( \,9 - \,6\,x) =$ ?

$\,-4\,x +\,1$ $\,2\,x \,-5$ $\,2\,x +\,13$ $\,-10\,x \,-5$ $\,2\,x \,-11$

$ \,2\,x - \,9\,\,x^2 - ( - \,\,x^2 + \,7\,x )=$ ?

$\,-10\,\,x^2 +\,9\,x$ $\,10\,\,x^2 \,-5\,x$ $\,-8\,\,x^2 +\,9\,x$ $\,-10\,\,x^2 \,-5\,x$ $\,-8\,\,x^2 \,-5\,x$