Question

Solve this equation for A:
HELPP!!!!

Answer 1

`\left[\begin{array}{cccc}a_(11)&a_(12)&a_(13)&a_(14)\end{array}\right] \pm\left[\begin{array}{cccc}b_(11)&b_(12)&b_(13)&b_(14)\end{array}\right] \\\\=\left[\begin{array}{cccc}a_(11)\pm b_(11)&a_(12)\pm b_(12)&a_(13)\pm b_(13)&a_(14)\pm b_(14)\end{array}\right] \\\\---------------------------------`

`A=\left[\begin{array}{cccc}a_(11)&a_(12)&a_(13)&a_(14)\end{array}\right] \\\\A+B=C\Rightarrow A=C-B\\\\\left[\begin{array}{cccc}a_(11)&a_(12)&a_(13)&a_(14)\end{array}\right] +\left[\begin{array}{cccc}11&17&-8&13\end{array}\right] =\left[\begin{array}{cccc}0&1&-2&3\end{array}\right]\\\\\left[\begin{array}{cccc}a_(11)&a_(12)&a_(13)&a_(14)\end{array}\right]=\left[\begin{array}{cccc}0&1&-2&3\end{array}\right]-\left[\begin{array}{cccc}11&17&-8&13\end{array}\right]`