Answer:
x = 1
9(2+3x)=45
18+27x = 45 (the product of 9 x 2 and 9 x 3x)
-18 + 3x -18 (subtract 18 from both sides; 18 - 18 cancel each other out)
27x = 27
27x/27 = 27/27 (right side cancels out)
