Question

Sum of tow numbers is 15,there difference is 7 what are the numbers let the numbers be x,y

Answer 1

Answer:

11 & 4

Step-by-step explanation:

The two numbers are unknown hence:

X & Y.

                  METHOD

X + Y = 15

X - Y = 7

                 FORMULA

X + Y + X -Y = 15 + 7

group the like terms together'

(X + X) + (Y - Y) = 22

       2X = 22

         X = 11

 

                  ANSWER

If X = 11, Then Y = 4

                 

                  PROOF

11 + 4 = 15

11 - 4 = 7