how do i solve 5(3)+2(18)-18/3

Question

help me solve this

Answer 1

Hello Andrew,

 

It would be my pleasure to help you solve this problem.

You will want to refere to what is known as the "Order of operations". This "cheat sheet" will tell you which parts of the math problem to calculate first and which calculations to do last. There is a great mnemonic out there to help you remember the order of operations:

 

1st: Please = Parentheses

2nd: Excuse = Exponents

3rd: My = Multiplication

4th: Dear = Division

5th: Aunt = Addition

6th: Sally = Subtraction

 

 

I will now walk you through the problem you have posted using the mnemonic for the order of operations:

 

5(3)+2(18)-18/3= ?

 

Please = Parentheses

5(3) = 5 X 3 = 15

2(18) = 2 X 18 = 36

 

Updated problem: 15 + 36 - 18/3 = ?

Excuse = Exponents

None

My = Multiplication

None

Dear = Division

18/3 = 18 ÷ 3 = 6

 

Updated problem: 15 + 36 - 6 = ?

 

Aunt = Addition

15 + 36 = 51

 

Updated problem: 51 - 6 = ?

Sally = Subtraction

51 - 6 = 45

 

As you can see, following the order of operations leads you to your answer, 45. If you have any more questions as to how I arrived at 45, feel free to send me a private message. Good luck in your scholastic endeavors and have a great day!

 

--Raphael B.

 

Answer 2

5(3) + 2(18) - 18/3

 

5(3) = 5 x 3 = 15

2(18) = 2 x 18 = 36

18/3 = 6

 

5(3) + 2(18) - 18/3 = 15 + 36 - 6 = do the math!