Find A, if: contexto.140 3 years ago Answer: On looking at components of the two sides, we have Furthermore, Thus,
![\[4x\text{ }=\text{ }-4\text{ }\Rightarrow x\text{ }=\text{ }-1\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-099adff45890c9604456ef2fd1b4c735_l3.png "Rendered by QuickLaTeX.com")
![\[4y\text{ }=\text{ }8\text{ }\Rightarrow \text{ }y\text{ }=\text{ }2\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-f0b71340c78fda89eb37f96bc7052be7_l3.png "Rendered by QuickLaTeX.com")
![\[4z\text{ }=\text{ }4\text{ }\Rightarrow \text{ }z\text{ }=\text{ }1\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-4de5a59d227ad822d2927744ddd3c38d_l3.png "Rendered by QuickLaTeX.com")
![\[~A\text{ }=\text{ }\left[ -1\text{ }2\text{ }1 \right]\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-c47d6144608ceebdd41d9956fe7f113f_l3.png "Rendered by QuickLaTeX.com")
