—3x — Зу = 9 — 3х + y = 1

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asked Sep 17, 2022 51.3k views

5 votes

—3x — Зу = 9
— 3х + y = 1

Mathematics
college

Pea asked

by Pea

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1 Answer

5 votes

Answer:

X = - 1

Y = - 2

Explanation:

$- 3x - 3y = 9 \\ + \\ - 3x + y = 1 \\ = \\ - 3x - 3y = 9 \\ + \\ 3x - y = - 1 \\ = \\ - 4y = 8 \\ y = 8 / -4 = - 2 \\ - 3x + ( - 2) = 1 \\ - 3x = 3 \\ x = - 3 / 3 = - 1$

Goksel answered Sep 23, 2022

by Goksel

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