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Podstawa = x
ramię = 2x (chodzi o 2*x)
podstawa + dwa ramiona = 35 cm
x + 2*2x = 35
x+ 4x = 35
5x= 35 :5
x= 7 cm
ramię = x*2 = 7cm* 2= 14 cm
podstawa= 7 cm
ramie1= xx
ramie2=xx
35:5=7
ramie=7+7=14
podstawa=7