Question

14+{-7+[+4-11+(-5-4)-(-6+8-3)]}

Cat facee??? Am primit asta la teza..si vreau sa vad daca l-am facut bine!!!Va rog

Answer 1

$\displaystyle \it 14+\{-7+[+4-11+(-5-4)-(-6+8-3)]\} = \\ =14+\{-7+[+4-11+(-9)-(2-3)]\}= \\ =14+\{-7+[+4-11+(-9)-(-1)]\}= \\ =14+[-7+(4-11-9+1)]= \\ =14+[-7+(-7-9+1)]= \\ =14+[-7+(-16+1)]= \\ =14+[-7+(-15)]= \\ =14+(-7-15)= \\ =14+(-22)= \\ =14-22= \\ =-8$