Chapter 1.5, Problem 1STP

For Exercises $1-5,$ choose the correct letter.

Which expression is equivalent to $17+(-15)?$

A. $-17+15$

C. $17-15$

B. $-17-15$

D. $17+15$

To determine

To choose the equivalent expression to given expression.

Answer to Problem 1STP

  $C).17-15.$

Explanation of Solution

Given information: An expression $17+\left(-15\right).$

Calculation:

We are given an expression:

$17+\left(-15\right)$

Remove parenthesis: $+\left(-a\right)=-a$

Multiplication of a positive sign with negative sign gives negative sign.

So, $+\left(-15\right)$ gives $-15$ .

Therefore,

$17+\left(-15\right)=17-15$

Therefore, equivalent expression to

$17+\left(-15\right)$ expression is $C)17-15.$