Question

Află numarul necunoscut:
b:7:5=8
64:c-2=6

Answer 1

b:7:5=8 => b:7=8*5=40 => b=40*7=280
64:c-2=6 => 64:c=8 => c=64:8=8
Raspuns: b=280
                 c=8

Answer 2

[tex] \frac{b}{7} * \frac{1}{5} =8 [/tex]
$\frac{b}{7*5} = \frac{8}{1}$
$\frac{b}{35} = \frac{8}{1}$
b=8*35
B=280

64:C=6+2
64:C=8
$\frac{64}{C} = \frac{8}{1}$
8C=64
C=$\frac{64}{8}$
C=8