Question

Which grouping of numbers gives the expression a value of 15?

i chose 6+3 x (18/9)-3 and got it wrong???

Answer 1

that actually equals 9 my friend

Answer 2

6+3= 9, times 2 and then -3

Answer 3

you're supposd to use PEMDAS

Answer 4

Do you have choices?

Answer 5

perenthesis first

Answer 6

18/9 = 2

Answer 7

Yes, one sec

Answer 8

now you have 6+3 * 2 -3

Answer 9

next you multiply
now you have 6+ 6 -3

Answer 10

then add
now you have 12 -3

Answer 11

now you have 9

Answer 12

6+(3x18/9)-3, 6+(3x18)/9-3, 6+3x18/(9-3)

Answer 13

\(6+3 \times \color{red}{(18 \div 9)}-3\)

Parentheses first:

\(= 6+3 \times \color{red}{2}-3\)

\(= 6+\color{red}{3 \times 2}-3\)

Then the multiplication:

\(= 6+\color{red}{6}-3\)

Then additions and subtractions in the order they appear from left to right:

\(= 6+6-3\)

\(= 12 - 3\)

\(= 9\)

Answer 14

PEMDAS is the order of operations:

P - Parentheses
E - Exponents
MD - Multiplications and divisions in the order they appear from left to right
AS - Additions and subtractions in the order they appear from left to right

Answer 15

6+3x18/(9-3)

6+3x18/(6)
6+54 / 6
6+9
15

Answer 16

15

Answer 17

@GBEiswhatmytitlesay

Try this one yourself. What do you get?

6+(3x18)/9-3

Answer 18

brb

Answer 19

18 x 3 is 54...sooo 6+54/9-3 54/9= 6 & 6+6-3...6+6 is 12 and -3 is 9

Answer 20

Here it is step-by-step. It's exactly what you did.