Black S.

asked • 11/11/18# What is 7 more than five times the number 9 divided by 15?

## 1 Expert Answer

Hank L. answered • 05/14/19

Dynamic, Experienced, and Patient Science, Math and Test Prep Tutor

To solve this problem, we have to convert all of those words into an equation.

Let's start with the part that says "five times the number 9." We can write that part like this:

(5 x 9)

Now, the problem says that the answer is "7 more" than that product, "divided by 15."

So let's first deal with the "7 more" part:

7 + (5 x 9)

Next, let's add in the "divided by 15" part:

7 + (5 x 9) / 15

Now, to solve the problem we have to follow the well-known "PEMDAS" rule for order of operations. Since "P" stands for "parentheses," we start with what's inside the parentheses:

7 + 45 / 15

Next, we have to be super careful. After "P for parentheses" comes "E for exponents," of which there are none, and then there's "M for multiplication" and "D for division." We already multiplied the values in the parentheses, so we should move on to D, right? But the problem is to decide whether we should add the product of the numbers that were in the parentheses (45) to 7 before dividing by 15 OR, instead, whether to divide 45 by 15 BEFORE adding that amount to 7.

I am going to go with PEMDAS' command that D is next and divide 45 by 15 first.

7 + 3

Now we go to the next letter in PEMDAS - "A for addition."

Once we add seven and three, we get 10!

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Joseph S.

Just substitute the unkown number with x and just make the equation. 7+5(9/15)11/12/18