Question

Calcule:
A)15+(8+2)
B)25-(10-1-3)
C)23-(2+8)-7
D)(10+5)-(1+6)
E)7-(8-3)+1

Answer 1

A) 8+2= 10
10 +15 = 25
B) 10- 4=6
25-6= 19
C)23-10-7= 6
D)15-7=8
E)7-5+1=3

Answer 2

A)
$15 +(10) \\ = 25$
B)
$25 - (6) \\ = 19$
C)
$23 - (10) - 7 = \\ 13 - 7 = \\ 6$
D)
$(15) - (7) = 8$
E)
$7 - (5) + 1 = \\ 2 + 1 = 3$