Question

(7,55 - 21/4 :0,7 ) : [0,036 x 100 - 3,41(6)]
AJUTOR DAU COROANA SI MULTE PUNCTE

Answer 1

Răspuns:

Numerotam operatiile:

1)21/4 : 0.7

2)7.55-rezultatul de la 1

3)0.036*100

4) rezultatul de la 3 - 3.41(6)

5)Rezultatul de la 2 : Rezultatul de la 4

Explicație pas cu pas:

1) 21/4 : 0.7=105/8

2) 7.55 - 105/8= -223/40

3) 0.036*100=3.6

4) 3.6 - 3.41(6)= -16.86

5) -223/40 : (-16.86) = 1115/3372

ATENTIE: Semnul ,, / '' in matematica inseamna linia de fractie ceea ce e operatia de impartire!

Sper ca te-am ajutat!

Answer 2

$\it (7,55 -\dfrac{21}{4}:0,7):[0,036\cdot100-3,41(6)] =\\ \\ \\ =\Big(\dfrac{755^{(5}}{100}-\dfrac{21}{4}:\dfrac{7}{10}\Big):\Big(\dfrac{36}{1000}\cdot100-3\dfrac{416-41}{900}\Big)=\\ \\ \\ = \Big(\dfrac{151}{20}-\dfrac{21}{4}\cdot\dfrac{10}{7}\Big):\Big(\dfrac{36}{10}-3\dfrac{\ \ 375^{(15}}{900}\Big)=\\ \\ \\ =\Big(\dfrac{151}{20}-\dfrac{^{10)}15}{2}\Big):\Big(\dfrac{36}{10}-3\dfrac{25}{60}\Big)=$

$\it =\dfrac{1}{20}:\Big(\dfrac{^{6)}36}{10}-\dfrac{205}{60}\Big)=\dfrac{1}{20}:\dfrac{11}{60}=\dfrac{1}{20}\cdot\dfrac{60}{11}=\dfrac{3}{11}$