Originally Posted by mat9

First of all that was not pi, that was some random number. second of all, you're making no sense there is no need to get complicated this is simple bedmas. you can start off:

48 [SIZE=2px]÷ 2(9+3) - brackets, addition
= 48 [/size][SIZE=2px]÷ 2(12) - division
= 24(12) - multiplication
= 288

or you can do it a second way to eliminate the need for bedmas and simple multiply the entire time by converting [/size][SIZE=2px]÷ 2 into * 1/2 because division is simply inverse of multiplication, so:

48 * 1/2(9+3)
= 48 * 1/2(12) - brackets, addition
= 48 * 6 or 24(12) - see in both ways of solving this simple elementary school math equation, you're last step is equivalent in both cases, therefore:
= 288
[/size]
this is so simple, i did not even need to convert everything into multiplication, simple BEDMAS would of worked as i stated in method one. tsk tsk, university students not understanding simple arithmetic. SMH

Btw, the reason why the calculators had different answers is because of the way it interprets the division sign which they use / on those TI calculators the way you enter fractions is by using division sign. similar to how we type fractions on computer

e.g. one-quarter is 1/4, so the calc is reading this as 1 over 4, which in this case would be 1 divided by 4 which the TI calc would give you 0.25.

now back to the equation in order to enter 48 [SIZE=2px]÷ 2(9+3), we would input 48/2(9+3), and im pretty sure the calculator is reading that as 48 all over 2(9+3)

so:

48
2(9+3)

which indeed is equivalent to 2, because that ends up becoming 48/24. that is not bedmas however, that is fractions. the equation we actually want to solve isn't suppose to be read as a fraction, it is simply 48 [/size][SIZE=2px]÷ 2(9+3) which should be done using bedmas. the correct way to enter into the TI calculator to avoid this error is to type (48/2)(9+3) because we want division first, so 48 divided by 2, then multiply it with what 9+3 equals to. so it becomes (24)(12).[/size]

Don't argue with the math guy, commerce guy.

Originally Posted by mat9

...

4) According to BEDMAS, we would do division first, and get 24(12)
5) Then you do multiplication last abd that leads to 288!

The only way you get 2, is if you did multiplication in step 4, and got 48/24, then did division last. however its BEDMAS and not BEMDAS.

I take it you didn't bother reading earlier posts. You're using BEDMAS wrong. Division and multiplication have equal precedence; you do not "do division first"; you do them in order from left to right.

And actually, BEMDAS is an equally valid mnemonic for the order of operations; it just happens that Canadian schools like to use BEDMAS.

Read here: http://en.wikipedia.org/wiki/Order_o...ns#M nemonics

Originally Posted by mat9

tsk tsk, university students not understanding simple arithmetic.