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Chapter 1: Problem 103

Write a numerical expression for each phrase and simplify. The sum of 9 and \(-4,\) decreased by 7

Short Answer

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Step by step solution

01

Identify Key Phrases

First, identify the important parts of the phrase: 'The sum of 9 and -4,' and then 'decreased by 7'.
02

Write Numerical Expression for the Sum

Translate the sum of 9 and -4 into a numerical expression. This gives: 9 + (-4)
03

Simplify the Sum

Simplify the sum 9 + (-4) which equals 5
04

Write Numerical Expression for Decrease

Now, take the result from the previous step and decrease it by 7: 5 - 7
05

Simplify the Expression

Simplify the expression 5 - 7 which equals -2

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

sum of integers
Understanding the sum of integers is crucial. Integers are positive and negative whole numbers, including zero. When we sum two integers, we essentially perform an addition operation with those numbers.

In our exercise,

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Most popular questions from this chapter

Write a numerical expression for each phrase and simplify. The sum of \(-5\) and 12 and 6.

The two tables show the heights of some selected mountains and the depths of some selected trenches. Use the information given to answer. \( \)\begin{array}{|l|c|}\hline \text { Mountain } & {\text { Height (in feet) }} \\\ {\text { Foraker }} & {17,400} \\ {\text { Wilson }} & {14,246} \\\ {\text { Pikes Peak }} & {14,110} \\ \hline\end{array} $$ \begin{array}{|l|c|}\hline\text {} & {\text { Depth }( \text { in feet } } \\ {\text { Trench }} & {\text { as a negative number }} \\ {\text { Philippine }} & {-32,995} \\ {\text { Cayman }} & {-24,721} \\ {\text { Java }} & {-23,376} \\ \hline \end{array} $$ How much deeper is the Cayman Trench than the Java Trench?

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