a) 25 : x = 125 : 100
25 : x = 1,25
x = 25 : 1,25
x = 20
b) 35,76 : x - 25,76 : x = 100
(35,76 - 25,76) : x = 100
10 : x = 100
x = 10 : 100
x = 0,1
25 : \(x\) = 125 : 100
25 : \(x\) = 1,25
\(x\) = 25 : 1,25
\(x\) = 20
b, 35,76 : \(x\) - 25,76 : \(x\) = 100
(35,76 - 25,76) ; \(x\) = 100
10 : \(x\) = 100
\(x\) = 10 : 100
\(x\) = 0,1