15/7+(-5/2); 8/5+(-4/1); 16/5+(-3/2)

Question

15/7+(-5/2); 8/5+(-4/1); 16/5+(-3/2)

Answer 1

15/7-5/2=30-35/14=-5/14
8/5-4/1=8-20/5=-12/5=-2,4
16/5-3/2=32-15/10=17/10=1,7