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Q27.

Expert-verified
Found in: Page 406

### Pre-algebra

Book edition Common Core Edition
Author(s) Ron Larson, Laurie Boswell, Timothy D. Kanold, Lee Stiff
Pages 183 pages
ISBN 9780547587776

# Evaluate the expression when $x=-5$ and $y=-7$.$x+y$

The value of given expression would be $-12$.

See the step by step solution

## Step 1. Given Information.

An expression: $x+y$

## Step 2. Calculation.

To find the value of the given expression, we will substitute $x=-5$ and $y=-7$ in our given expression as shown below:

role="math" localid="1649434581420" $\begin{array}{c}x+y=-5+\left(-7\right)\left(\text{Substituting given values}\right)\\ =-5-7\\ =-12\end{array}$

## Step 3. Conclusion.

The value of given expression would be $-12$.