Răspuns:
a)
[tex] \frac{x}{6} = \frac{9}{27} = \frac{1}{3} = > x = \frac{6}{3} = 2[/tex]
b)
[tex] \frac{2}{3} = \frac{6}{y} = > y = \frac{(6 \times 3)}{2} = 9[/tex]
c)
[tex] \frac{0.5}{3} = \frac{6}{z} = > z = \frac{(6 \times 3)}{0.5} = 18 \div \frac{1}{2} = 36[/tex]
d)
[tex] \frac{a}{1.2} = \frac{10}{3} = > a = \frac{(1.2 \times 10)}{3} = 4[/tex]
e)
[tex] \frac{2.1}{b} = \frac{7}{4} = > b = \frac{(2.1 \times 4)}{7} = \frac{84}{10} \times \frac{1}{7} = \frac{12}{10} = 1.2[/tex]
f)
[tex] \frac{1.8}{u} = \frac{1.12}{2.52} = > u = \frac{(1.8 \times 2.52)}{1.12} = 4.05[/tex]
h)
[tex] \frac{27}{42} = \frac{45}{7x} = > 27 \times 7x = 42 \times 45 = > x = \frac{(42 \times 45)}{(27 \times 7)} = 10[/tex]
