Question

Ayuda por favor
Cuánto es:
(-2.5)+(+6.5)=
(+14.8)+(-12.2)=
(+8.2)+(-6.2)+(+2.5)=
(+12.5)+(-8.5)+(-1)=​

Answer 1

Holiwi!

(-2.5)+(+6.5)=

−2.5+6.5

= − 2.5+6.5

=4

(+14.8)+(-12.2)=

14.8−12.2

=14.8+−12.2

=2.6

(+8.2)+(-6.2)+(+2.5)=

8.2−6.2+2.5

=2+2.5

=4.5

(+12.5)+(-8.5)+(-1)=

12.5−8.5−1

=4−1

=3