Question

Help! medal and fan

Answer 1

@kola908

Answer 2

Order of Operations (PEMDAS)

1. Parenthesis
2. Exponents
3. Multiplication and Division
4. Addition and Subtraction

Answer 3

Using this as a reference and looking at your expression which do you think will be last?

Answer 4

Hint: Numbers above mean the order they come in, from first to last.

Answer 5

addition

Answer 6

???

Answer 7

Or Subtraction

Answer 8

erm.

Answer 9

oh ty.

Answer 10

Addition or Subtraction are our last order of operations so we see which of those comes first.

Answer 11

@MikaylaSkyy

Answer 12

Addition is first so that is not the last operation, the one that comes last is the last operation to be performed which is subtraction.

Answer 13

No, not quite. You need to understand PEMDAS correctly.

Order of Operations
1. Parentheses
2. Exponents
3. Multiplication and Division in the order they appear from left to right
4. Addition and Subtraction in the order they appear from left to right

Answer 14

Ohhh

Answer 15

i get it now.

Answer 16

I am very glad.

Answer 17

With the correct interpretation of PEMDAS, let's look at this.

The first operation is the division inside the parentheses. Incidentally, the parentheses are unnecessary in this case.

\(20 - \color{red}{(54 \div 6)} \cdot 2 + 1\)

\( = 20 - \color{red}{9} \cdot 2 + 1\)

\( = 20 - 9 \cdot 2 + 1\)

Now looking at the remaining expression, we find a multiplication. That goes next.

\( = 20 - \color{red}{9 \cdot 2} + 1\)

\( = 20 - 18 + 1\)

Now we have only an addition and a subtraction left.

Answer 18

According to PEMDAS, we do the addition and subtraction, from left to right in the order they appear. That means the next operation is the subtraction.

\(= \color{red}{20 - 18} + 1\)

\(= \color{red}{2} + 1\)

Finally, we do the addition.

\(= 2 + 1\)

\(= 3\)

Answer 19

As you can see, the last operation done was the addition.