$\,9\,x +\,7 +\,2\,x =$ ?

$\,-7\,x +\,7$ $\,7\,x +\,7$ $\,11\,x +\,7$ $\,18\,x$ $\,9\,x +\,9\,x$

$\,2\,y \times (\,-4\,x\,) +\,9\,xy =$ ?

$\,7\,xy$ $\,xy$ $\,17\,xy$ $\,2\,y \,-4\,x +\,9\,xy$ $\,-17\,xy$

$\,6 \,-3\,x \,-\,y \,-\,x +\,2=$ ?

$\,-4\,x \,-\,y +\,4$ $\,2\,x \,-\,y +\,2$ $\,-4\,x \,-\,y +\,8$ $\,-5\,xy +\,8$ $\,-2\,x \,-\,y +\,8$

$\,-4\,x \,-7\,\,x^2 \,-6 +\,9\,\,x^2 +\,1=$ ?

$\,2\,\,x^2 \,-4\,x \,-5$ $\,-2\,\,x^2 \,-5$ $\,-16\,\,x^2 \,-4\,x \,-5$ $\,16\,\,x^2 \,-4\,x +\,7$ $\,-5\,\,x^2 \,-4\,x +\,2$

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

$\,4\,\,x^2 +\,3\,x$ $\,4\,\,x^2 \,-3\,x$ $\,7\,\,x^2$ $\,4\,\,x^2 \,-4\,x$ $\,-4\,\,x^2 +\,3\,x$

$\,5\,x \,-7 \,-\,x \,-6 +\,2\,x=$ ?

$\,8\,x +\,1$ $\,-7\,x$ $\,5\,x$ $\,6\,x \,-13$ $\,6\,x +\,1$ $\,2\,x \,-13$

$\,-7 +\,3\times\,8\,x +\,4 =$ ?

$\,-32\,x +\,4$ $\,24\,x \,-3$ $\,24\,x \,-11$ $\,11\,x \,-3$ $\,-24\,x \,-3$

$\,-\,x +\,4\,y \,-8\,y +\,2\,x=$ ?

$\,x \,-12\,y$ $\,x \,-4\,y$ $\,-3\,x \,-4\,y$ $\,3\,xy \,-6\,yx$ $\,-3\,x +\,12\,y$