Question

Oblicz
a) 3,5 2,1
__ = __
2x-1 x

b) x+5 x+2
__ = __
x+1 x

Answer 1

3,5 2,1
----- = ------
2x-1 x

3,5x=4,2x-2,1/+2,1
2,1+3,5x=4,2x/-305x
2,1=0,7x/ :0,7
x=3


x+5 x+2
----- = ------
x+1 x

x kwadrat + 5x=x kwadrat +2x +x+2 / - x kwadrat
5x=3x+2/-3x
2x=2/:2
x=1