Evaluate the Expression 5x-6 When x Equals -3: Step-by-Step Solution

Question

What will be the result of this algebraic expression:

$5x-6$

if we place

$x=-3$

00:06 Let's get ready to solve this problem.

00:10 First, we replace each variable with the correct number from the data.

00:17 Remember, a positive number times a negative number gives a negative result.

00:22 Great job! Let's keep calculating.

00:25 And there you have it, that's the solution!

The first step is to substitute X in the exercise, resulting in:

$5(-3)-6$

When we have two numbers with different signs, meaning one number is negative and the other is positive or vice versa,

the result of multiplication or division will always be negative.

$5\times-3=-15$

$-15-6=-21$

$-21$