If two sides of a rectangle add up to 18cm and the area is 80 units squared then the length is 10cm, and the width is 8cm. If you add 10 and 8 together you get 18, and if you multiply those you get 80 units squared. Hope this helps!
♥ To solve this you are going to find x. ♥
♥ X in this case is representing a unknown variable, meaning we are not sure of the number x, and to finish the solution to your problem we have to find x.
♥ So to find x the first step is to simplify both sides of the equation.
♥ Starting with distribution:

♥ Now we want to flip the equation.

♥ Our next and almost final step, is to add the number -3 to both sides of our problem. This is going to help us tremendously.

♥ Now our last step before we get our answer is to divide both sides of the problem. In this case we are going to do this:

♥ And then because of that we get our final answer of: -4.
♥
x=-4 <span>♥</span>
Answer:
A
Step-by-step explanation:
3(5+x)
3(5)+3(x)
15+3x
Answer:
A add -9
Step-by-step explanation:
After this you should add -9 to bring it over to the left side.
Answer:
false
Step-by-step explanation:
you didnt add the picture but the answer is false bc only 3 were shown