Question

25. Efetue as adições algébricas:
a) 115 - 321 + 73 +330 - 228 - 116 + 220
b) -712 +51 +63 - 54 - 51 + 712 -9 +20
c) 15-41 - 12 - 21 - 36 -40
d) -6-7-8-9-10-11-12-13​

Answer 1

a) 115 - 321 + 73 +330 - 228 - 116 + 220

+738 - 665

+73

b) -712 +51 +63 - 54 - 51 + 712 -9 +20

+846 - 826

+20

c) 15-41 - 12 - 21 - 36 -40

15 - 150

-135

d) -6-7-8-9-10-11-12-13​

-76