Sides that two side is equal so
5x+10=40
5x=30
X=6
Answer:

Step-by-step explanation:
2 + m
Rewrite with variable first.
m + 2
m + 2
Can’t be simplified further.
m - (-2)
Distribute negative sign.
m + 2
-2-m
Rewrite with variable first.
-m - 2
The last expression is not equivalent to m+2.
Answer:

Step-by-step explanation:
You could change the equation to this: 
*This is the exact same as 
You can continue to break this down until you get:

*This too = 
With this new equation, you can cancel out the common term: 
You come up with my answer.
<em>Hope this helps!!</em>
It's an expression which <span>shows that two quantities are not equal.</span>
Myra is 51 inches tall.
We'll use Susan as our base for this. She is 50 inches tall, and ignoring Myra or now, we move on to Elanie, who is said to be 2 inches shorter than Susan - therefore, Elanie is 48 inches tall. Now that we know this, we can return to Myra's information which says she is 3 inches taller than Elanie, which would mean she is in fact 51 inches tall.