Question

Calculati:
a) (0,25 + 3 pe 4):0,5-(1 pe 2 -1 pe 3): 5 pe 6=


b)-7+(-20):4=


c)8-6(-3+9)=


d)[-12-3 • (4-6)]:(-6)+(4-6)•(-2)=


e)(-10)•[-3+2•(-6+8)]=


Îmi trebuie urgent!!!Dau coroana va rog❤


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Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

$\it a)\ \ 0,25=\dfrac{1}{4};\ \ \ 0,5=\dfrac{1}{2}\ .\ \ \ Exerci\c{\it t}iul\ \ devine:\\ \\ \\\Big(\dfrac{1}{4}+\dfrac{3}{4}\Big):\dfrac{1}{2}-\Big(\dfrac{1}{2}-\dfrac{1}{3}\Big):\dfrac{5}{6}=1\cdot2-\dfrac{1}{\not6}\cdot\dfrac{\not6}{5}=2-\dfrac{1}{5}=\dfrac{^{2)}9}{\ \ 5}=\dfrac{18}{10}=1,8$

$\it b)\ \ -7+(-20):4=-7-5=-12\\ \\ c)\ \ 8-6\cdot(-3+9)=8-6\cdot6=8-36=-28$

$\it d)\ \ \ =(-12+6):(-6)+4=1+4=5$

$\it e)\ \ \ =(-10)\cdot(-3+4)=-10\cdot1=-10$