Question

find x if x+y=7 and x-y=9

Answer 1

Step-by-step explanation:

HAVE TO FIND THE VALUE OF X

WE HAVE,

X+Y=7-(A)

X-Y=9-(B)

SOLVE THE EQUATION, WE GET

2Y=-2

Y=-1 SUBSTUTE VALUE OF Y IN EQN:

A 0R B

I.E. X-1=7=>X=8

X=8 Y=-1

Answer 2

Answer:

from the 1st equation we get:-

x+y = 7

x= 7-y

putting the value x in the second equation, we get:-

7-y-y =9

7-2y =9

-2y = 9-7

y = 2/-2

y = -1

putting the value of y in 1st equation, we get:-

x+ (-1) = 7

x-1= 7

x = 7+1

x = 8

•°• the values of

x=8

y=-1

hope it helps