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Chapter 10: Q6. (page 603)

Simplify the expression.

21x+15y鈭�9x鈭�4y

Short Answer

Expert verified

The final expression is 12x+19y.

Step by step solution

01

Step 1. Define an expression.

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

02

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.

03

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

Simplify the expression 21x+15y鈭�9x鈭�4yby combining the like terms.

role="math" localid="1647956395837" 21x+15y鈭�9x鈭�4y=21x+15y鈭�9x+4y=21x鈭�9x+15y+4y=12x+19y

Therefore the final expression is 12x+19y.

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Most popular questions from this chapter

Graph the function, and compare to the parent graph. State the domain and range.

g(x)=4x

Find the coordinates of the midpoint of the segment with the given endpoints.

(鈭�3,4),鈥�(鈭�2,鈭�3)

Solve each equation. Check your solution.

a+4=6

Graph the function, and compare to the parent graph. State the domain and range.

g(x)=x鈭�4

The functions=Acan be used to find the length of a side of a square given its area. Use this function to determine the length of a side of a square with an area of 90 square inches. Round to the nearest tenth if necessary.
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