Question

One half X +13 equals nine

Answer 1

$\frac{1}{2}$x+13=9
$\frac{1}{2}$x=9-13
$\frac{1}{2}$x=-4
x=-4*2
x=-8
Answer: x=-8

Answer 2

1/2 x + 13= 9
multiply by 2 to eliminate the fraction
x+ 26= 18
subtract 26 from both sides
  x=  -8

Hope this helps