Question

Find x and y, if x + 2y = 5 and x - y = -1

Answer 1

Answer:

x = 2, y = 3

Step-by-step explanation:

Given :

x + 2y = 5

x - y = - 1

Subtracting both the equations

x - x + 2y - (- y) = 5 - (- 1)

3y = 6

y = 6 / 2

y = 3

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Now in x - y = - 1

x - (3) = - 1

x = - 1 + 3

x = 2

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Answer 2

Step-by-step explanation:

★Given:-

x + 2y = 5

x - y = -1

★To find :-

The value of x and y.

★Solution:-

Using eliminating method.

Eliminating x.

As the coefficients of x in both the equations are same, so no need to multiply the equations.

Subtracting 2nd eq. from the 1st eq.

x + 2y = 5

-(x - y = -1)

____________

3y = 6

y = 6/3

y = 2.

_____________________

Substituting the value of y in x - y = -1 will give,

x - y = -1

x - 2 = -1

x = 2 - 1

x = 1

____________________

y = 2.

x = 1.

Hope it helps.