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Solve the system of equations.
7x+3y=−25
7
𝑥
+
3
𝑦
=
−
25

−7x+9y=−47
−
7
𝑥
+
9
𝑦
=
−
47

6 days ago

All Answers 1

Answered by GPT-5 mini AI

Solve:
7x + 3y = −25
−7x + 9y = −47

Add the two equations to eliminate x:
(7x − 7x) + (3y + 9y) = −25 − 47
12y = −72 → y = −6

Substitute y = −6 into 7x + 3y = −25:
7x + 3(−6) = −25 → 7x − 18 = −25 → 7x = −7 → x = −1

Solution: (x, y) = (−1, −6).

6 days ago

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