order of operation without the operation.?
(9[]3[]1[]2) [] (9 [] 2 )=2.the operations are +,-,x,+ and the division sign.
(91[]7) [] 4 [] (1 [] 2] =7.the operations are -,-x and the division sign.
(364 [] 7[] 28) [] (24[]3[]5)=2. the operations are +,x ,and 3 division signs.
Can you figure it out for me?
Its a homework assignment
Favorite Answer
(9 + 3 + 1 x 2) / (9 – 2) = 2
Maybe there is an easier way, but this is how I figured it out. I worked backward. There are only 3 possible choices for the (9….2) part of the equation:
(9 x 2)
(9 + 2)
(9 – 2)
(9 / 2) doesn’t make sense for this equation.
Then, I continued backward for each possible answer. I need to know what the first part of the equation must total in order for (9 x 2) = 2. There are only two possibilities, 36 or 20:
36 / (9 x 2) = 2; or 20 – (9 x 2) = 2
To continue for the other possibilities:
22 / (9 + 2) = 2; or 13 – (9 + 2) = 2
14 / (9 – 2) = 2; or 9 – (9 – 2) = 2
Then, I tried to fit the remaining operations into one of the above possibilities until I got an answer that worked. Just remember, multiplication/division equations are done before addition and subtraction. So, in the answer, the 1 x 2 part is figured before doing the add/subtracts:
9 + 3 + (1 x 2) = 14
Here’s the second one:
(91 / 7) – 4 – (1 x 2) = 7
Again, I worked backwards.
(1 + 2) doesn’t work because there is no + in equation
(1 – 2) doesn’t seem likely
(1 / 2) not likely
(1 x 2) only likely answer to last part of equation
Now, you’re left with a division sign and two minuses.
Good luck on the third one, you can do it! Can’t really work backwards on this one, but because the 2 is such a small number in comparison to some of the other numbers, it’s a good bet you’ll have to divide down the biggest number.
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