Răspuns :
Răspuns:
a)-(3-7+2)+(-5+2)-(-9+1) =-(-2)+(-3)-(-8)=2-3+8= 7
b) (-5+3)-(-2+6-1)+(-3) =(-2)-(+3)-3=-2-3-3= -8
c) 5-(-3)+7+(-2+3-5)-(-1) =5+3+7+(-4)+1=5+3+7-4+1= 12
d) -(5+3-2)-(-8)+(-8)-(-6) =-(+6)+8-8+6=-6+6= 0
e) 3-(7-3-2+1)-(-5+3)+(-9) = 3-3-(-2)-9=3-3+2-9= -7
f) 12+(-7)+(-3+2)-(-9+5–3) =12-7+(-1)-(-7)=12-7-1+7= 11