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2 years ago

2x + 5y = 8 x - 2y = -5 Simultaneously pleasee

Mathematics

2 answers:

vodka [1.7K]2 years ago

7 0

Answer:

Step-by-step explanation:

mario62 [17]2 years ago

3 0

Answer:

(- 1, 2 )

Step-by-step explanation:

2x + 5y = 8 → (1)

x - 2y = - 5 → (2)

multiplying (2) by - 2 and adding to (1) will eliminate x

- 2x + 4y = 10 → (3)

add (1) and (3) term by term to eliminate x

0 + 9y = 18

9y = 18 ( divide both sides by 9 )

y = 2

substitute y = 2 into either of the 2 equations and solve for x

substituting into (1)

2x + 5(2) = 8

2x + 10 = 8 ( subtract 10 from both sides )

2x = - 2 ( divide both sides by 2 )

x = - 1

solution is (- 1, 2 )

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sammy [17]

Answer:

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Step-by-step explanation:

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Ganezh [65]

Answer:

Step-by-step explanation:

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3 years ago

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melomori [17]

Answer:

Option (1) is correct.

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Step-by-step explanation:

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Luba_88 [7]

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lozanna [386]

Answer:

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Step-by-step explanation:

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