Rozwiąż równanie:
x / 12 = (x +10) / 20
20 * x = 12 * (x +10)
20x = 12x + 120
20x - 12x = 120
8x = 120
x = 120 : 8
x = 15
(5x/60 ) - ((3x+30)/60)=0
(5x-3x-30)/60=0
2x-30=0
2x=30
x=15
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x / 12 = (x +10) / 20
20 * x = 12 * (x +10)
20x = 12x + 120
20x - 12x = 120
8x = 120
x = 120 : 8
x = 15
(5x/60 ) - ((3x+30)/60)=0
(5x-3x-30)/60=0
2x-30=0
2x=30
x=15