Chapter 10: Q6. (page 603)

Simplify the expression.
$(21 x + 15 y) - (9 x - 4 y)$

Short Answer

Expert verified

The final expression is $12 x + 19 y$ .

Step by step solution

Step 1. Define an expression.

A mathematical expression is a combinations of numbers and variables ordered with mathematical operations.

Step 2. Define like and unlike terms.

In algebra, like terms are the terms that have the same variables and powers.

The unlike terms are two or more terms that are not like terms.

Step 3. Simplify the expression 21x+15y−9x−4y.

Simplify the expression $(21 x + 15 y) - (9 x - 4 y)$ by combining the like terms.

role="math" localid="1647956395837" $(21 x + 15 y) - (9 x - 4 y) = 21 x + 15 y - 9 x + 4 y = 21 x - 9 x + 15 y + 4 y = 12 x + 19 y$

Therefore the final expression is $12 x + 19 y$ .

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Simplify the expression.
$(21 x + 15 y) - (9 x - 4 y)$

Short Answer

Step by step solution

Step 1. Define an expression.

Step 2. Define like and unlike terms.

Step 3. Simplify the expression 21x+15y−9x−4y.

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Simplify the expression.21x+15y−9x−4y

Short Answer

Step by step solution

Step 1. Define an expression.

Step 2. Define like and unlike terms.

Step 3. Simplify the expression 21x+15y−9x−4y.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Theoretical and Mathematical Physics

Applied Mathematics

Mechanics Maths

Pure Maths

Probability and Statistics

Statistics

Study anywhere. Anytime. Across all devices.

Simplify the expression.
$(21 x + 15 y) - (9 x - 4 y)$