Question

solve by elimination method :x+y=3 and 2x+y=-2​

Answer 1

Answer:

x = -5

y = 8

Step-by-step explanation:

x + y = 3.................................................................(1)

2x + y = -2.............................................................(2)

Subtracting equation (2) from equation (1)

-x = 5

x = -5

Multiplying equation (1) by '2' on both sides

2(x+y) = 2*3

2x + 2y = 6..........................................................(3)

Subtracting equation (2) from equation (3)

y = 6-(-2)

y = 8

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Answer 2

Answer:

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Step-by-step explanation:

Let x + y = 3 be equation number 1 -------> 1)

2x + y = -2 be equation number 2------------> 2)

2) - 1)

2x - x + y - y = - 2 - 3

x = -5

Sub x = - 5 in 1)

-5 + y = 3

y = 8