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—3x — Зу = 9 — 3х + y = 1
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5 votes
—3x — Зу = 9
— 3х + y = 1

User Pea
by
7.7k points

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

User Goksel
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