Question

If the sum of two number is 137 and their difference is 43 this situation can be algebrically represented as

Answer 1

x+ y = 137

x -y = 43

x=90 and y = 47

Explanation:

If the sum of two numbers is 137 and their difference is 43 .

Let x be the first number and y be the second number.

x+ y = 137

x -y = 43

Adding the two equations together,

x+ y = 137

x -y = 43

-----------------------

2x = 180

2x/2 = 180/2

x = 90

Solving for y.

x+y = 137

90+y = 179

y = 137-90

x = 47