Expert: Bobby Soltani - 10/29/2005

Question
I am taking Pre-algebra for the first time (math and I don't agree)and I have a question at the end of the chapter that I just can't seem to come up with the answer they are giving me, please help!

The question is:
Simplify 3[4+6(2+5)-3]

Would you please show me step by step how you answer the question.

Thank you.  

Answer
Hi Kathleen,

When you solve these types of problems, you want to follow the proper order of operations.  For this one, you will do all the operations inside the parentheses first.

3[4+6(2+5)-3]

start with the inner most parentheses.

3[4+6*7-3]

now do the multiplication inside the brackets

3[4 + 42 - 3]

now since we only have addition/subtraction inside the brackets, we will do the calculations from left to right.

3[4 + 42 - 3]
3[46 - 3]
3[43]
finally, multiply.

3*43 = 129

Let me know if you have any questions.

Bobby