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3/4x=45
x=60
3/4 x = 45
x = 45 : 3/4 = 45 * 4/3 = 60
sprawdzenie : 1/4 * 60 = 15
60 - 15 = 45
pozdrawiam, i liczę na naj. (:
4.x - 1/4 x . 4 = 45 . 4
4x - x = 180
3x = 180 / : 3
x = 60
60 - 1/4 . 60 = 45
60 - 15 = 45
kropki to razy