Question

-17.3+(-3.7)
-3+9
-0.8+(-16.02)
-2 3/7+ (-2 6/7)

Answer 1

$-3+9=9-3=6 \ -0,8+(-16,02)=-16,82\-2 frac{3}{7} +(-2 frac{6}{7} )=-4 frac{9}{7} =-5 frac{2}{7}$