Question

Calcule utilizando as 3 palavras separar somar e diminuir. Os numeros negativos e os positivos. a) -4 +5+6+3-9 = b) 6-8-3-7-5-1+0-2= c) 2+9-10-6+14-1+20 = d) -13-2-1+2 = e) 18-3-21 = f) -3+5+2+3-1 =

Answer 1

A: +1+9-9
10-9
1,,

B: -2-10-6-2
-12-8
-20,,

C: 11-16+13+20
-5+33
+28,,

D: -15+1
-14,,

E: 15-21
-6

F: -2+5-1
+3-1
2,,