Mathematics

Grade6

Easy

Question

# 2x + 3y + 5z

- 2x
- 3y
- 5z
- None of the above

Hint:

### This is an algebraic expression. An algebraic expression consists of two components: a variable and a constant. A variable is a quantity that doesn’t have any fixed value. It takes value according to the conditions. It is denoted by the alphabet. A constant is a quantity with a fixed value. In this question, we are given an expression. We have perform the required operations and find the final value.

## The correct answer is: None of the above

### The given expression is 2x + 3y + 5z

There are three variables and 3 constants in the above expression. The variables are: ’x’, ‘y’, and ‘z’. There are three terms in the above expression. We have to perform the operations between them and find the right answer.

If we see, all the three terms contains a different variable. Such terms with different variables are called as unlike terms. And the terms with same variables are called as like terms.

No further operation is possible for unlike terms as they have different variables. So there will be no change in the equation.

Therefore, the value of equation is 2x + 3y + 5z.

So option which is ’ 2x + 3y + 5z’, is the right option.

The main part of such questions is like and unlike terms. We have to be careful about the variables before performing any operation.