Question

3x-4y=20;x+2y=5 simplified the epuation
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Answer 1

$\huge\mathbb\green{ANSWER!!!!}$

• 3x - 4y = 20

• x + 2y = 5

According to question -

• 3x - 4y = 20 } × 1

• x + 2y = 5 } × 3

3x - 4y = 20

3x - 6y = 15

(-) (+) (-)

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2y = 5

• y = 5/2

Putting y = 5/2 on 3x - 4y = 20 we get

• 3x - 4 × 5/2 = 20

• 3x - 10 = 20

• 3x = 30

• x = 10

Hence,

• x = 10

• and y = 5/2