Question

Dau COROANA!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
AJUTOR!!!!!!!!!!!REPEDE!!!!

Answer 1

înmulțim pe diagonala și egalam

a)

$\frac{x}{6} = \frac{14}{9} \\ 9x = 14 \times 6 \\ x = 84 \div 9 \\ x = \frac{84}{9}$

b)

$\frac{4}{x} = \frac{10}{7} \\ 10x = 4 \times 7 \\ x = 28 \div 10 \\ x = \frac{28}{10} {}^{?(2} \\ x = \frac{14}{5}$

c)

$\frac{2}{15} = \frac{x}{20} \\ 15x = 2 \times 20 \\ x = \frac{40}{15} {}^{(5} \\ x = \frac{8}{3}$

d)

$\frac{8}{17} = \frac{12}{x} \\ 8x = 12 \times 17 \\ x = \frac{204}{8} {}^{(4} \\ x = \frac{51}{2}$

e)

x/25 = 7/10

10x=7•25

x=175/10 simplificam prin 5

x= 35/2

f) 21/x=14/9

14x=21•9

x=189/14 simplificam prin 7

x=27/2

g)5/27=x/36

27x=5•36

x=180/27 simplificam prin 9

x=20/3

h)24/7=21/x

24x=21•7

x=147/24 simplificam prin 3

x=49/8