Question

calculeaza
+7-5-4+6+[+1-5+7+(-4-6+9-3)]​

Answer 1

Raspuns :

+7-5-4+6+[+1-5+7+(-4-6+9-3)]

+7-5-4+6+[1-5+7+(-4)]

+7-5-4+6+(1-5+7-4)

+7-5-4+6+(-1)

7-5-4+6-1

-2+5

3

Explicatie:

1. + si + = +

ex: +3+2 = +5

2.+ si - = - (daca nr cu minus este mai mare decat cel cu plus)

ex : -5+2 = -3

in caz contrar

-2+5 = +3

3. - si - = -

ex: -2-3 = -5

Succes! ❤