My answer is different when I follow the PEMDAS rule.

Hi!

If you write out the steps you took maybe we can figure out where is your error

Here is my solution, let me know if i got the right solution

= 12 - 20 / 4 + 3 * (-2)²

= 12 - 20 / 4 + 3 * 4

= 12 - 20 / 4 + 12

= 12 - 5 + 12

= 19

1 Like

Your answer is right!

Can you please explain the step

12-5+12?

yes of course

12-5+12 = 24-5 = 19

1 Like

But why we didn’t solve -5+12, first?

You should have solved in that order first to respect the parenthesis, but since 12+12-5 is the same as 12-5+12 i did it in a different order, i hope it won’t confuse you.

1 Like

Yes I understand because according to PEMDAS rule we have to add before subtracting and if we solve -5+12 it becomes subtraction instead of addition. I hope I made reasonable logic…

1 Like