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0,3*x = 0,2 * (x*20)
0,3x = 0,2x + 4
0,3x-0,2x = 4
0,1x = 4 | /0,1
x = 40
(x+20kg) = 40 + 20 = 60kg
Odp;Całkowita masa syropu to 60kg.
POZDRAWIAM;*