Find two numbers that add up to 240 and subtract 2 times less than add.

Let x be the first number, then y is the second number.

Let’s compose and solve the system of equations:

x + y = 240;

x – y = 120;

To solve the system of equations, we will use the addition method. We get:

2x = 360;

x = 360/2 = 180 – the first number;

180 + y = 240;

y = 240 – 180 = 60 is the second number.

Examination:

180 + 60 = 240;

180 – 60 = 120;

Answer: 180 and 60.