Question

solve:x+y =5 and 2x-y=7​

Answer 1

Answer:

x = 4 , y = 1

Step-by-step explanation:

x+y=5...............(1)

2x-y=7...............(2)

Add (1) and (2) we get

x+y=5

2x-y=7

x+y+2x-y=5+7

3x=12

x=4

Put x =4 in (1)

4+y = 5

y =5-4

y= 1

Answer 2

Answer:

Step-by-step explanation:

Using elimination method

x+y=5  eqn i

2x-y= 7  eqn ii

x+y=5

2x-y=7

3x= 12

x=4

Substitute x=4 in eqn ii

2(4)-y=7

8-y=7

-y= 7-8

-y= -1

y=1