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5. Calculati:
a) –121 +17:[(93:3+3):2].50;
b) -2-(3-(-(2-3+6:2)-(-2)-7]};
c) -2-[2-3-[-6:3–9:(3:1-12)]).
REPEDE DAU COROANA

Răspuns :

Claudiaghita2010ask

Explicație pas cu pas:

a) –121 +17:[(93:3+3):2]x50=

–121 +17:[(31+3):2]x50=

–121 +17:[34:2]x50=

-121 +17:17x50=

-121+ 1x50=

-121+50= -71

b) -2-(3-(-(2-3+6:2)-(-2)-7]}=

-2-(3-(-(2-3+3)-(-2)-7]}=

- 2-(3-(-2+2-7)]=

-2(3+7) =

-2×10= -20

c) -2-[2-3-[-6:3–9:(3:1-12)])=

-2-[2-3-[-6:3–9:(3-12)])=

-2-[2-3-[-6:3–9:(-9)])=

-2-[2-3-(-6:3+1])=

-2-[2-3-(-2+1)]=

-2-(2-3+1)=

-2-0=-2

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