2/5z+2/3z-7/15z=2 1/2

Question

2/5z+2/3z-7/15z=2 1/2

Answer 1

6/15z+10/15z-7/15z=2 1/2
9/15z=5/2
3/5z=5/2
z=5*5/3*2
z=25/6
z=4 1/6

Answer 2

2/5z+2/3z-7/15z=2 1/2 Z=5/1-2/5-2/3+7/15 Z=75/15-6/15-10/15+7/15 Z=66/15 Z=4,4