2 years ago

1

Mathematics

1 answer:

Artemon [7]2 years ago

3 0

Answer:

x = 4

Step-by-step explanation:

2x − y = 11 ⇒ -y = - 2x +11 ⇒ y = 2x - 11

x + 3y = -5

x + 3(2x - 11) = -5

x + 6x - 33 = -5

+33 +33

7x = 28

÷7 ÷7

x = 4

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