Question

What are the solutions to the equation I3x-15I =0?

Answer 1

@zepdrix

Answer 2

3x - 15 = 0

solve for x

Answer 3

x=5?

Answer 4

yup

Answer 5

or x=15?

Answer 6

why would it be 15?

x = 5

Answer 7

There are two solutions.

Answer 8

5 and 15 right?

Answer 9

@abb0t

Answer 10

try plugging in x = 15 back into the original equation and see if it still works...

Answer 11

does 3(15)-15 equal 0?

Answer 12

No.

Answer 13

so, is x = 15 a solution?

Answer 14

no.

Answer 15

good, so our answer is x = 5

we can also graph as further proof

http://www.wolframalpha.com/input/?i=abs%283x-15%29+%3D+0