[15-0] would be a numerical expression for this. :P
Answer:
Example Problem
Solve 2x+3=15.
Example Answer
x=6
How to Check Your Answer with Algebra Calculator
First go to the Algebra Calculator main page.
Type the following:
First type the equation 2x+3=15.
Then type the @ symbol.
Then type x=6.
Try it now: 2x+3=15 @ x=6
Step-by-step explanation:
Answer:

Step-by-step explanation:
Use cosine:


We have:

Substitute:

<em>cross multiply</em>
<em>divide both sides by 9063</em>
