Question

The sum of two numbers is 60 and their difference is 40.Find the numbers.

Answer 1

X+Y=60 X-Y=40 after adding both the equation we will get 2X=100 then,X=50 and  Y=10

Answer 2

Heya!!!  Let 1 no. be= x Let 2nd no. be= y x+y=607 x-y=40   Use any of the three methods: Substitution, elimination or cross- multiplication.  Hope it helps