Simplifying equations. Orders of operation.

Simplify the following expression.

(2+1×2)−4×6
=(2+2)−4×6
=4−4×6
=4−24
=−20

My answer was 20 and it was wrong.

When i look at this i see, 2 plus 1 times 2 minus 4 times 6
The part im getting wrong is the minus, which in this case means a -4 instead of a 4.
I dont understand how you can you tell the difference ?
My only conclusion is that since this is a order of operations module, that this doesnt really exist outside of the module, that its just a example for learning ?
Or maybe since its saying to simplyify the expresion, that right there is telling me that im not going to add or subtract some how ?

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 Quote by Iccanui Simplify the following expression. (2+1×2)−4×6 =(2+2)−4×6 =4−4×6 =4−24 =−20 My answer was 20 and it was wrong.
This should do it
 The generally accepted order of operations are BIDMAS (or BODMAS, same thing), which is: Brackets, Indicies, Division and Multiplication, Addition and Subtraction. So, brackets are computed first, then indices (powers), then division and multiplication have equal priority, and are done left to right, then addition and subtraction, which also have equal priority, are done left to right. In real life, nobody should write anything as ambiguous as this, because it just causes problems. (2 + (1 × 2)) - (4 × 6) would be a far better way to write it.

Simplifying equations. Orders of operation.

 Quote by acabus The generally accepted order of operations are BIDMAS (or BODMAS, same thing), which is: Brackets, Indicies, Division and Multiplication, Addition and Subtraction. So, brackets are computed first, then indices (powers), then division and multiplication have equal priority, and are done left to right, then addition and subtraction, which also have equal priority, are done left to right. In real life, nobody should write anything as ambiguous as this, because it just causes problems. (2 + (1 × 2)) - (4 × 6) would be a far better way to write it.
Ahh ok i get it now.

Couldnt wrap my head around it or a second. Thank you. :)

Quote by Iccanui
 Quote by acabus The generally accepted order of operations are BIDMAS (or BODMAS, same thing), which is: Brackets, Indicies, Division and Multiplication, Addition and Subtraction. So, brackets are computed first, then indices (powers), then division and multiplication have equal priority, and are done left to right, then addition and subtraction, which also have equal priority, are done left to right. In real life, nobody should write anything as ambiguous as this, because it just causes problems. (2 + (1 × 2)) - (4 × 6) would be a far better way to write it.
Ahh ok i get it now.

Couldnt wrap my head around it or a second. Thank you. :)
I don't get it. Why is given expression ambiguous and why is your answer wrong?