Question

solve 2x+y=5 and 3x_y=15​

Answer 1

Answer:

by elemination method

subtraction

2x+y=5----eq(I)

3x-y=15—eq(ii)

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5x=20

x=20/5

x=4

put the value of x in equation I

2(4)+y=5

8+y=5

y=5-8

y=-3

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Answer 2

Answer:

2x+y=5

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

3x-y=15

3x-5+2x=15

5x=20

x=4

(1)y=5-2.4=-3