Question

Resuelve:
a.-4+(-7+2)+15
b.-2+(3-7)
c.4-(-4+12)
d.9+(-12+6+-7)
e.17-(-4+3-10)
f.-18+25-(-23+54)

Answer 1

A-14
B-MENOS 2
C-MENOS 4
D-MENOS 4
E-28
F-12

Answer 2

a. -4+(-7+2)+15
-4+(-5)+15
-4-5+15
-9+15
R//=6
b. -2+(3-7)
-2+(-4)
-2-4
R//=-6
c. 4-(-4+12)
4-(+8)
4-8
R//= -4
d. 9+(-12+6+-7)
9+(-12+6-7)
9+(-12-1)
9+(-13)
9-13
R//= -4
e. 17-(-4+3-10)
17-(-4-7)
17-(-11)
17+11
R//= 28
f. 18+25-(-23+54)
43-(+31)
43-31
R//= 12