12/x + 3/4 = 3/2 ( subtract 3/4 on both sides)
12/x = 3/2 - 3/4 (combine both fractions)
12/x = (6 - 3) / 4
12/x = 3/4 (cross multiply)
48 = 3x (divide both sides with 3)
16 = x
substitute value of x in the equation to check
12/16 + 3/4 = 3/2
.75 + .75 = 1.5
1.5 = 1.5