Question

solution of simuntenous equation x-y=7 , x+y=11

Answer 1

Step-by-step explanation:

x-y=7...........(1)

x+y=11.........(2)

Adding both equation

x-y+x+y=7+11

=>2x=18

=>x=18/2

=>x=9

and using value of 'x' in equation (1)

=>9-y=7

=>9-7=y

=>2=y

=>y=2