Question: Reckoning In Problems 1-3, prove the statements form x matrices A and Band scalars c and d? 1. A - B = A +(-l)B 2.

Reckoning In Problems 1-3, prove the statements form x matrices A and Band scalars c and d?
1. A - B = A +(-l)B
2. A + B = B + A
3. (c + d)A = cA + dA?

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