Question

elimine os parenteses e determine as somas algebricas:
(+1,3)+(-2,7)=
(-0,56)+(-1,75)-(8,6)=
(-0,23)+(+2,08)-(-1,37)+(7,29)=
(+10)-(-2,17)-(+3,67)-6,25+(+4,7)=

Answer 1

(+1,3)+(-2,7)=
1,3 - 2,7 = -1,4

(-0,56)+(-1,75)-(8,6)=
-0,56 - 1,75 - 8,6 = -10,91

(-0,23)+(+2,08)-(-1,37)+(7,29)=
-0,23 + 2,08 + 1,37 + 7,29 = 10,51

(+10)-(-2,17)-(+3,67)-6,25+(+4,7)=
10 + 2,17 - 3,67 - 6,25 + 4,7 = 6,95