Question

Solve for x in the proportion . 3 6
---- = ----
x+2 x-1

x = −5

x = 1

x = 4

x = 5

Answer 1

You could do two things here:
1. Just plug the answers in to see which is right.
2. write the equation as\[3(x-1)=6(x+2)\]Then work out the brackets, collect terms (terms with x to the left side, the rest on the right) and solve for x.

Answer 2

C??

Answer 3

Well, the steps above lead to:\[3x-3=6x+12\]\[-3x=15\]\[x=\frac{ 15 }{ -3 }=-5\]so the right answer would be A.