Question

Solve by elimination method

11x + 15y = 23

7x - 2y = 20

Answer 1

HOLA

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11x + 15y = 23 -- Equation 1

7x - 2y = 20 -- Equation 2

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Multiplying 2 in equation 1 and 15 in equation 2

We have ,

22x + 30y = 46
105x - 30y = 300
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127x - 0 = 254

$x \: = \: \frac{254}{127} = \: 2$

So , X = 2 -- Equation 3

Substituting 3 in 2

7x - 2y = 20

7(2) - 2y = 20

14 - 2y = 20

2y = 20 - 14 = 6

$y \: = \: \frac{6}{2} = \: 3$

So we say X = 2 and Y = 3

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HOPE U UNDERSTAND ❤❤❤❤❤

Answer 2

Answer:

x = 2 and y = -3

Refer the attachments.