Question

quien me ayuda con esto porfis ​

Answer 1

a) -6 +3 -1 -8 +9=

(3+9) - (6+1+8)=

12 - 15 = -3

b) 7 +2 -1 -[9 +(3-4)]=

9 - 1 -[9 +(-1)] =

8 -[9 -1] =

8 -[8] = 0

c) 4 × (-2) -5 -1 +3 × 2=

-8 -5 -1 + 6 =

(6) - (8+5+1) =

6 - 14 = -8