Question

1. Calculaţi: a) 3/4 + 4/21 * 42/4 。 (1/12 + 17/4) / (104/12) + 1/2 e) 2 - (49/45 - 7/15) / (14/20) g) (37/12 - 3/4) / (28/5) + 21 36 : b) (11/12 + 3/4) / (36/24) d) (13/12 - 11/18) / (17/9) +2: f) (13/12 - 4/15) / (49/30) + 1/3 h) (11/30 - 1/8) / (21/40) - 1/6
VA ROG REPEAT DAU 40 DE PUNCTE!!!​

Answer 1

Răspuns:

a)

$\frac{3}{4} + 2 = \frac{11}{4}$

b)

$\frac{5}{3} \times \frac{24}{36} = 5 \times \frac{8}{36} = 5 \times \frac{2}{9} = \frac{10}{9}$

c)

$\frac{13}{3} \times \frac{12}{104} + \frac{1}{2} = \frac{4}{8} + \frac{1}{2}$

$\frac{1}{2} + \frac{1}{2} = 1$

d)

$\frac{17}{36} \times \frac{9}{17} + 2 = \frac{1}{4} + 2 = \frac{9}{4}$

e)

$2 - \frac{28}{45} \times \frac{20}{14} = 2 - \frac{2}{4} \times 4$

$[2 - \frac{8}{9} = \frac{10}{9}$

f)

$\frac{49}{60} \times \frac{30}{49} + \frac{1}{3} = \frac{1}{2} + \frac{1}{3} = \frac{5}{6}$

g)

$\frac{7}{3} \times \frac{5}{28} + \frac{21}{ 36} = \frac{1}{3} \times \frac{5}{4} + \frac{21}{36}$

$\frac{5}{12} + \frac{21}{36} = 1$

h)

$\frac{29}{120} \times \frac{40}{21} - \frac{1}{6}$

$\frac{29}{63} - \frac{1}{6} = \frac{37}{126}$

Sper că te-am ajutat!