1 year ago

3х – 8y = -56 -3х – 56 = -8ysolve using system of equations

1 answer:

7 0

$\begin{gathered} 3x-8y=-56 \\ -3x+8y=56 \\ \text{those equations are equivalent, so we only need to solve one},\text{ } \\ 3x-8y=-56\rightarrow3x=-56+8y\rightarrow x=\frac{-56+8y}{3} \\ \text{let y=t} \\ S=\lbrace(\frac{-56+8t}{3},t)^{}\colon t\in R\}^{} \end{gathered}$

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_____
The first attempt in the attached picture has parentheses in the wrong place for the second term. This simplifies to
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