Question

a=b+c-2
a=c-d+9
a=b-d+11
based on the system of equations above, what is the value of a?

(a) 2
(b) 9
(C) 10
(d) 11
(e) 20

Answer 1

cheating for what? I don't know how to do this question so I'm posting. And you spelled "site" wrong.

Answer 2

Here we have 3 equations and 4 unknowns. I believe this problem is indeterminate.

Answer 3

i never said I want a straight answer. Do you have something against me? Why are you picking on me?

Answer 4

Are you sure you typed it in correctly?

Answer 5

Yep I did. this problem is from a sat practice book.

Answer 6

that's the whole problem. What happens if the person comes up with a different answer other than the choices?

Answer 7

The best I can do is give you a in terms of either b, c or d.

Answer 8

I tried that but it doesn't work out for some reason.

Answer 9

@lgbasallote any ideas?

Answer 10

@trenvilla 's good....

Answer 11

anyway...what did you try @eyust707 ?

Answer 12

@ tenvilla I wasn't even talking to you

Answer 13

@trenvilla does not like Asians :P

Answer 14

agree

Answer 15

i think you failed to notice there are only 3 unknowns here since they're all equal to a

Answer 16

jeez people are so touchy these days
@sussycake there are more variables than equations here, so either there is a typo, one equation is missing, or the problem is posed incorrectly
you can solve for one variable in terms of others, but you cannot assign a number to the variables

Answer 17

when did people here get so uptight about the questions. take a pill

Answer 18

the thread is ridiculous! facepalm.sigh

Answer 19

calm the math down, let's just help each other out, bros.

Answer 20

Ok, I got a=0, but that's obviously not right.