-4,5+(-4,5)= 3,345+(-1,78)=

Question

-4,5+(-4,5)=
3,345+(-1,78)=

Answer 1

1)-4,5+(-4,5)=-4,5-4,5=-9

2)3,345+(-1,78)=3,345-1,78=1,565

Answer 2

1.  - 4.5 + ( - 4.5 ) = -9

 

2. 3.345 + ( - 1.78) =  1.565