Question

solve the following pair of linear equation by elimination method: 3x+y=15,2x-y=5
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Answer 1

3x + y = 15 .... (1)

2x - y = 5 .... (2)

Add equation (1) & (2)

3x + y = 15

2x - y = 5

-----------------

5x = 20

Now

• 5x = 20

• x = 20/5

• x = 4

Put x=4 in equation (1)

• 3(4) + y = 15

• 12 + y = 15

• y = 15 - 12

• y = 3

Hope it will helps you...

Answer 2

Answer:

3x+y=15

2x-y=5

5x = 20

x = 20/5

x = 4

3(4)+y=15

12+y=15

y=15-12

y=3

Step-by-step explanation:

hope it helps you.