Question

i) Solve x+y=6; x - y = 4​

Answer 1

Answer:

x+y=6 ..(i)

x - y = 4..(ii)

by adding eqn i and ii

x+y+x -y =6+4

2x=10

x=5

put the value of x in any eqn

x+y=6

5+y =6

y = 1

x - y = 4

5-y= 4

y=1

Answer 2

Answer:

Step-by-step explanation:

x + y = 6----------- (1)

x - y = 4------------ (2)

From (1),

y = 6 - x----------- (3)

Put (3) in (2),

x - ( 6 - x ) = 4

⇒x - 6 + x = 4

⇒2x = 10

⇒x = 5

∴ y = 1