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madam [21]
2 years ago
8

Please I don’t understand I need help thank you

Mathematics
1 answer:
kirza4 [7]2 years ago
8 0

Answer:

Step-by-step explanation:

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2x+y=-2
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A

given the 2 equations

2x + y = - 2 → (1)

x + y = 5 → (2)

subtract (2) from (1) term by term to eliminate y

(2x - x ) + (y - y ) = (- 2 - 5 )

x + 0 = - 7 ⇒ x = - 7

substitute x = - 7 in either of the 2 equations and solve for y

(2) : - 7 + y = 5 ( add 7 to both sides )

y = 5 + 7 = 12 → A


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