Question

which of the following expressions has a value of 27?
a.-[12-53+14]
b.[12-53+14]
c.[12]+[-53]+[14]
d.[-12]-[53]-[-14]

Answer 1

which one would you expect to be an answer?

Answer 2

- (12-53+14) is your solution.
jump the negative into the box and you get -12-53+14 and when you do the addiction and subtractions. You will get your solution of positive 27.

Answer 3

The answer is correct but the explanation of jumping the negative into the box had an error in the results. You get -12+53-14 Note the differtence in the signs

Answer 4

I change that solution! actually the solution is D. because if you add -14 plus positive 53 you'll get postive 41 and then subtract -14 from that. you will get your solution of postive 27.

Answer 5

Choice D gives a result of -51.

Answer 6

Guys the answer is clearly B... [12-53+14]
resolving this we get [-27] and gets out of a module as 27.

Answer 7

The answer is a) -(-27) which is 27.

Answer 8

OT.. its not -(-27) but -[-27]... -[-27] = -27 as far as i know.

Answer 9

Your solution is D.

Answer 10

Cutie0430 Look closely at choice a. Think of that - sign to the left as a -1 then it would look like this: -1(12-53+14) This means when you clear the parenthesis you are simply multplying each number by a -1. Remember the rule of multiplying bhy signs -*_ =+ +*- = - so you get -12+53-14 when you combine the -12 and -14 you get -26 now combine that with the +53 you will get the result you are looking for

Answer 11

Radar () and [] are not the same things. One is paranthesis one is module and they operate differently as well. (-1) = -1 but [-1] = 1

Answer 12

Are you thinking of the |-1| =1 absolute value indicator?

Answer 13

i believe thats what she meant. otherwise why not just use parentheses? Well i might be wrong.

Answer 14

I don't know what level Cutie is operating at. I will research the term "module" and the symbol [].. I have been wrong many times and this may be one of those times LOL

Answer 15

hahahha... :)) by module i do mean absolute value indicator. :))) Thats what we have seen back in high school and it was soviet education system :))) however |x| is correct version. you are right about that.

Answer 16

Thanks Balash, for the clarification. Good luck with your studies.

Answer 17

Thanks Radar. No problem... and about that good luck... Thats the thing i need the most right now. Check this out if you have a little time.

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