Question

I've tried this problem for the past day and I still can't understand it!

Answer 1

bc = ab+1
ac=bc+ab-10
ab+bc+ac=72

Answer 2

three eqns and three variables

Answer 3

got it?

Answer 4

err.

Answer 5

construct mathematical eqns out of the three pieces of information given to you

Answer 6

ive already given them in order..try to make sense of how i transformed english into math

Answer 7

....kk i will try.

Answer 8

72 = x + (x + 1) + (2x + 1 - 10)
Now solve for x