Question

Compute: (4 + 9) − 3(6) ÷ 2 + 8

Answer 1

12

Answer 2

To solve this, remember order of operations: Parenthesis, Exponents, Multiplication/Division, then Addition/Subtraction, which you can remember by the mnemonic "Please Excuse My Dear Aunt Sally" (apparently Aunt Sally couldn't remember the order of operations. Don't be like Aunt Sally.). So:

Perform the operations inside parenthesis (4+9) first. That gives us:
\[13-3(6)\div2+8\]
Then multiplication of 3(6) gives us:
\[13-18\div2+8\]
Then division (use the two immediate terms on either side of the division sign 18 / 2) gives us:
\[13-9+8\]
Finally, addition and subtraction gives us:
\[12\] :)

Answer 3

Start with do parentese's first, then multiplication and division. do 4+9=13, 3x6=18, then 18/2=9. So, you're equation will look like this, so far: 13-9+8= .... So just do, 13-9=4+8=12
So, you're final answer is 12!