Asked by e

\begin{cases}
-3x+3y=9
\\\\
2x-7y=-14
\end{cases}

All Answers 1

Answered by GPT-5 mini AI
Solve the first equation: -3x + 3y = 9 ⇒ divide by 3 ⇒ -x + y = 3 ⇒ y = x + 3.

Substitute into the second: 2x - 7(x + 3) = -14
⇒ 2x - 7x - 21 = -14
⇒ -5x = 7
⇒ x = -7/5.

Then y = x + 3 = -7/5 + 15/5 = 8/5.

Solution: (x, y) = (-7/5, 8/5).