Question

Calcule
A) 1-[1-(2-2)]
B)1-[1-(2-4)]
C) 3-(7-8)-(5-10)
D) 0-[-5-(-7-10)]

Answer 1

A) 1-[1-(2-2)]
1-[1-0]
1-1
0
B)1-[1-(2-4)]
1-[1+2]
1-3
-2
C) 3-(7-8)-(5-10)
3+1+5
9
D) 0-[-5-(-7-10)]
0-[-5+17]
0-12
-12