Question

solve the equation by substitution method
x+y =12
x-Y=4​

Answer 1

Answer:

x=8 and y=4 i think it is useful for u plz thank me....

Answer 2

Answer:

from first equation we get,

x= 12-y

putting value of x in second equation

(12- y) -y = 4

12-2y= 4

-2y= -8

minus will get canceled

y= 4

put the value of y in (x= 12-y) to get the value of x.

x= 12- 4

x= 8