Question

Please Help Me
Danny made a mistake in the following problem.
The mistake was made in Line ___. Only input the number of the first incorrect line.

Line 1 21 + 35 ÷ 7 + 6(2)
Line 2 21 + 5 + 6(2)
Line 3 21 + 11(2)
Line 4 21 + 22
Line 5 43
is my answer right or no
I think its line 2 because he forgot to do 6(2)

Answer 1

I think you're right, because the parentheses need to be simplified first according to the PEMDAS rule.

Answer 2

@a1234 i know but would the 2 in the parentheses still be 2

Answer 3

No, it would be multiplied by 6.

21 + 35 ÷ 7 + 6(2)
21 + 35 ÷ 7 + 12
21 + 5 + 12
= 38

Answer 4

oh ok so it would be line 1

Answer 5

It's Line 2. Line 1 is just the initial problem, right?

Answer 6

it was a typo i meant line 2

Answer 7

Ok. I agree; it's Line 2.

Answer 8

is this correct
3-24÷8+4^2
3-24÷8+16
3-3+16
=16

Answer 9

@a1234

Answer 10

There is nothing wrong with line 2.
Just because he did not do 6(2) yet, it doesn't mean he made a mistake.
He could do 6(2) on the next line.
The first mistake is on line 3 where he added 5 + 6 together instead of multiplying 6(2) first. In the order of operations, multiplication comes first, so after line 2, he should have

Line 3: 21 + 5 + 12

Answer 11

BTW, the parentheses in 6(2) simply mean multiplication.
They do not come first in PEMDAS.

Answer 12

it was line 2 i got the question right

Answer 13

Ok. I'm glad you got it correct, but I don't agree with the answer.

Answer 14

You can do this problem one step at a time.
My line 2 below is exactly like the problem's line 2 and my solution is correct.
Line 2 is correct. It's line 3 of the given problem that has an error.

Line 1 21 + 35 ÷ 7 + 6(2)
Line 2 21 + 5 + 6(2)
Line 3 21 + 5 + 12
Line 4 26 + 12
Line 5 38