Respuesta :

When one number is negative and the other is positive. 

In the situation, x + (-x) is combined making zero and other y + (-y) is making zero.

What is the arithmetic operator?

Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.

Summation = addition of two or more numbers or variable

Subtraction = Minus of any two or more numbers with each other called subtraction.

Division = divide any two numbers or variable called division.

Multiplication = to multiply any two or more numbers or variables called multiplication.

If we combine any two opposite quantities then their summation must be zero.

For example,

if you combine 5 and -5 then it will be 0.

If you combine 10 and -10 then it will be 0.

So,

The first situation ⇒

Combining x and -x

x + (-x) = 0

The second situation ⇒

Combining y and -y

y + (-y) = 0

Hence, In the situation, x + (-x) is combined making zero and other y + (-y) makes zero.

To learn more about the arithmetic operators,

brainly.com/question/25834626

#SPJ2