Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$a+b= \left[\begin{matrix} -3 & 5 \\1 & -4 \\4 & 7 \end{matrix}\right]$$

Answer

a=[-3-b,5]-b,[1-b,-4]-b,[4-b,7]-b

Solution


Remove parentheses.
a+b=\(-3,5\),\(1,-4\),\(4,7\)
Break down the problem into these 6 equations.
Collect all solutions.
a=\(-3-b,5\)-b,\(1-b,-4\)-b,\(4-b,7\)-b
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