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afla termenul necunoscut:
x+25/100=58/100 100/100-x25/100 75/100-x=37/100


Răspuns :

x+25/100=58/100

x = 58 / 100 - 25 / 100

x = 33 / 100

V: 33 / 100 + 25 / 100 = 58 / 100


100 / 100 - x = 25 / 100

x = 100 / 100 - 25 / 100

x = 75 / 100

V: 100 / 100 - 75 / 100 = 25 / 100


75 / 100 - x = 37 / 100

x = 75 / 100 - 37 / 100

x = 38 / 100

V: 75 / 100 - 38 / 100 = 37 / 100