Question

x+y=4
x-y=2

3x-4y=26
2x-3y=19

3x-2y=0
x-y=-1​

Answer 1

Explicación paso a paso:

x+y=4. x-y=2. = 3-y=2. = -y= 2-3 =. -y=-1. y=1

x-y=2

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2x=6. x=6/2=3

2(3x-4y=26). 2x-3y=19. =. 2x-3(-5)=19. =. 2x+15=19

-3(2x-3y=19). 2x=19-15. 2x=4. x=4/2. x=2

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6x-8y=52

-6x+9y=-57

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y= -5

3x-2y=0. x-y=-1. =. x-3=-1. = x=-1+3. =. x=2

-3(x-y=-1)

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3x-2y=0

-3x+3y=3

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y=3