Here's how I solved it. (Keeping in mind my last math class was in 1984.)
3x + (2x)/2 = 60
2x/2 reduces to x, so 3x + x = 60
3x + x = 4x, so 4x = 60
4x/4 = 60/4
x = 15
3x + (2x)/2 = 60
2x/2 reduces to x, so 3x + x = 60
3x + x = 4x, so 4x = 60
4x/4 = 60/4
x = 15