13/11 = 1 2/11 As a decimal 1 2/11 = 1.181818.... (Recurring to infinity).
-11/6
1.181818181818181818181818181818181818181818181818181818181818181818181818181818181818181818181...
It is 11*13 = 143
13 + 130 = 143
-13 + 24 = 11
143/11 = 13
13 - 2 = 11
X + 11 = 13.Subtract 11 from both sidesX + 11 - 11 = 13 - 11X = 2
-11
b-11 = -13 add 11 to BOTH sides b = -2
The answer to 1 over 2x plus 13 equals 9 is x equals -8.