Two less than is 3 times a number is the number as a equation

This is the equation: 3x-2=5x+15

you combine like terms: 3x-3x-2=5x-3x+15

the 3x on the left cancles out: - 2=2x+15

subtract 15 on both sides: - 2-15=2x+15-15

the 15 on the right cancles out:--17=2x

divide by 2: - 17/2=2x/2

x equals negative 8.5: x=-8.5