Name:			Date:
Simplify.

1) $4\left[\begin{array}{cccc}7& 8& 4& -3\end{array}\right]-\left[\begin{array}{cccc}3& 38& -3& -6\end{array}\right]$	2) $3\left[\begin{array}{cccc}4& 3& 2& -4\end{array}\right]-\left[\begin{array}{cccc}2& 10& -4& -5\end{array}\right]$
3) $\left[\begin{array}{cc}2& 3\\ 4& -2\\ 6& 3\end{array}\right]+5\left[\begin{array}{cc}-4& 3\\ 2& 5\\ -3& -1\end{array}\right]$	4) $3\left[\begin{array}{c}4\\ 3\end{array}\right]$
5) $\left[\begin{array}{cc}4& 7\\ 8& 2\end{array}\right]-\left[\begin{array}{cc}-8& 0\\ 2& -4\end{array}\right]-\left[\begin{array}{cc}7& 10\\ -2& -3\end{array}\right]$	6) $3\left[\begin{array}{cc}6& 4\\ 5& -5\\ 3& 1\end{array}\right]$
7) $2\left[\begin{array}{cccc}7& 8& 4& -5\end{array}\right]-\left[\begin{array}{cccc}4& 20& -9& -8\end{array}\right]$	8) $\left[\begin{array}{ccc}3& -10& -4\end{array}\right]+\left[\begin{array}{ccc}3& -5& -7\end{array}\right]$
9) $\left[\begin{array}{c}9\\ 10\end{array}\right]+\left[\begin{array}{c}4\\ 5\end{array}\right]$	10) $6\left[\begin{array}{c}10\\ 20\end{array}\right]$
11) $2\left[\begin{array}{cc}2& 4\\ 3& -2\\ 4& 3\end{array}\right]$	12) $8\left[\begin{array}{c}2\\ 4\end{array}\right]$
13) $\left[\begin{array}{cc}7& 8\end{array}\right]+\left[\begin{array}{cc}-5& -12\end{array}\right]$	14) $\left[\begin{array}{cc}10& 9\\ 8& 4\end{array}\right]-\left[\begin{array}{cc}-4& 0\\ 2& -7\end{array}\right]-\left[\begin{array}{cc}10& 10\\ -4& -3\end{array}\right]$
15) $\left[\begin{array}{cc}3& 4\\ -4& -2\\ -7& -4\end{array}\right]+\left[\begin{array}{cc}1& -1\\ 6& 1\\ 4& 10\end{array}\right]$	16) $\left[\begin{array}{cc}6& 4\\ -3& -4\\ -10& -2\end{array}\right]+\left[\begin{array}{cc}5& -2\\ 7& 2\\ 5& 8\end{array}\right]$
17) $\left[\begin{array}{c}4\\ 5\end{array}\right]+\left[\begin{array}{c}7\\ 8\end{array}\right]$	18) $\left[\begin{array}{cc}8& 4\\ 3& 2\end{array}\right]-\left[\begin{array}{cc}-3& 0\\ 3& -8\end{array}\right]-\left[\begin{array}{cc}9& 6\\ -9& -4\end{array}\right]$
19) $-5\left[\begin{array}{cc}-7& 0\\ 0& 5\end{array}\right]$	20) $\left[\begin{array}{cc}10& 4\end{array}\right]+\left[\begin{array}{cc}-3& -9\end{array}\right]$

 

Answers:

1) $\left[\begin{array}{cccc}25& -6& 19& -6\end{array}\right]$	2) $\left[\begin{array}{cccc}10& -1& 10& -17\end{array}\right]$
3) $\left[\begin{array}{cc}-18& 18\\ 14& 23\\ -9& -2\end{array}\right]$	4) $\left[\begin{array}{c}12\\ 9\end{array}\right]$
5) $\left[\begin{array}{cc}5& -3\\ 8& 9\end{array}\right]$	6) $\left[\begin{array}{cc}18& 12\\ 15& -15\\ 9& 3\end{array}\right]$
7) $\left[\begin{array}{cccc}10& -4& 17& -2\end{array}\right]$	8) $\left[\begin{array}{ccc}6& -15& -11\end{array}\right]$
9) $\left[\begin{array}{c}13\\ 15\end{array}\right]$	10) $\left[\begin{array}{c}60\\ 120\end{array}\right]$
11) $\left[\begin{array}{cc}4& 8\\ 4& -4\\ 8& 6\end{array}\right]$	12) $\left[\begin{array}{c}16\\ 32\end{array}\right]$
13) $\left[\begin{array}{cc}2& -4\end{array}\right]$	14) $\left[\begin{array}{cc}4& -1\\ 10& 14\end{array}\right]$
15) $\left[\begin{array}{cc}4& 3\\ 2& -1\\ -3& 6\end{array}\right]$	16) $\left[\begin{array}{cc}11& 2\\ 4& -2\\ -5& 6\end{array}\right]$
17) $\left[\begin{array}{c}11\\ 13\end{array}\right]$	18) $\left[\begin{array}{cc}2& -2\\ 9& 14\end{array}\right]$
19) $\left[\begin{array}{cc}35& 0\\ 0& -25\end{array}\right]$	20) $\left[\begin{array}{cc}7& -6\end{array}\right]$