Question

15. Calculați:
a) 4 + (-2) + (-4);
b) 5+(-4)+(-6)+9
c) 7 + (-6) + (-1) + 8 + (-8);
d) - 8-(-6)-(-2)
e) 5+(-7) - (4)-(-4);
f)3+(-2)+(-4+3)
Va rooooooooooog ajutați-mă!! ​

Answer 1

Răspuns:

a) 4+(-2)+(-4)= 4-2-4= -2

b) 5+(-4)+(-6)+9= 5-4-6+9= 4

c) 7+(-6)+(-1)+8+(-8)= 7-6-1+8-8= 0

d) -8-(-6)-(-2)= -8+6+2= 0

e) 5+(-7)-4-(-4)= 5-7-4+4= -2

f) 3+(-2)+(-4+3)= 3-2+(-1)= 3-2-1= 0

Answer 2

a)4+(-2)+(-4)=4-2-4= -2

b)5+(-4)+(-6)+9= 5-4-6+9= 4

c)7+(-6)+(-1)+8+(-8)= 7-6-1+8-8= 0

d)-8-(-6)-(-2)= -8+6+2= 0

e)5+(-7)-(4)-(-4)= 5-7-4+4= -2

f)3+(-2)+(-4+3)=3-2-4+3=0