Question

2x - 3y = 10; 4x-5y = 15​

Answer 1

Answer:

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The answer

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Answer 2

Answer:

x = -5/2

y = -5

Step-by-step explanation:

2x - 3y = 10 --------------(1)

4x - 5y = 15​ --------------(2)

2*(1) - (2) =>

4x-6y - (4x-5y) = 20 - 15

4x-4x -6y+5y = 5

-y = 5

y = -5

substitute y = -5 in (1),

=> 2x-3(-5) = 10

=> 2x +15 = 10

=> 2x = 10-15

=> 2x = -5

=> x = -5/2

verification:

4x-5y = 15

4(-5/2) - 5(-5) = 15

-10+25 = 15

15 = 15

verified