Question

Vă rog repede, am nevoie de ea astăzi!​

Answer 1

Răspuns:

1). $\frac{7}{9}$:$\frac{1}{49}$+$\frac{21}{9}$+$\frac{83^{0} }{31^{0} }$

$\frac{7}{9}$·$\frac{49}{1}$+$\frac{21}{9}$+1=$(\frac{1}{4}+\frac{10}{20}:\frac{7}{8}).\frac{14}{1}=$

$\frac{343}{9}$+$\frac{21}{9}$+1

$\frac{343+21+9}{9}$=$\frac{364+9}{9}$=$\frac{373}{9}$-Rezultatul final

2).$\frac{3}{9}.(\frac{8}{9}-\frac{1}{6}):\frac{5}{4}=$$\frac{3}{4}.\frac{39}{9}:\frac{5}{4}=$$\frac{3}{4}.\frac{39}{9}.\frac{4}{5}=\frac{3}{1}.\frac{39}{1}.\frac{1}{5}=$$\frac{117}{5}$-Rezultatul final

3).$[\frac{1}{4}+(\frac{25}{10}-\frac{8}{4}):\frac{7}{8}].\frac{14}{1}=$$(\frac{1}{4}+\frac{50-40}{20}):\frac{7}{8}).\frac{14}{1}$=$(\frac{1}{4}+\frac{10}{20}:\frac{7}{8}).\frac{14}{1}=$

$(\frac{1}{4}+\frac{1}{2}.\frac{7}{8}).\frac{14}{1}=$$(\frac{4+7}{16}).\frac{14}{1}=\frac{11}{16}.\frac{14}{1}=$$\frac{11}{8}.\frac{7}{1}=\frac{77}{8}$-Rezultatul final