If and X = A + B then find X

Engineering

Mathematics

Introduction to Matrix

Algebra of Matrices

Question

If $A = [\begin{array}{ccc} 3 & 2 & - 1 \\ 2 & - 2 & 0 \\ 1 & 3 & 1 \end{array}], B = [\begin{array}{ccc} - 3 & - 1 & 0 \\ 2 & 1 & 3 \\ 4 & - 1 & 2 \end{array}]$ and X = A + B then find X

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A = [\begin{array}{ccc} 3 & 2 & - 1 \\ 2 & - 2 & 0 \\ 1 & 3 & 1 \end{array}], B = [\begin{array}{ccc} - 3 & - 1 & 0 \\ 2 & 1 & 3 \\ 4 & - 1 & 2 \end{array}]

X = A + B = [\begin{array}{ccc} 3 & 2 & - 1 \\ 2 & - 2 & 0 \\ 1 & 3 & 1 \end{array}] + [\begin{array}{ccc} - 3 & - 1 & 0 \\ 2 & 1 & 3 \\ 4 & - 1 & 2 \end{array}]

= [\begin{array}{ccc} 0 & 1 & - 1 \\ 4 & - 1 & 3 \\ 5 & 2 & 3 \end{array}]