5x + 4x + 3x = 120
12x = 120
x = 10
AB = 5x = 5×10 = 50 cm
BC = 4x = 4×10 = 40 cm
AC = 3x = 3×10 = 30 cm
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5x + 4x + 3x = 120
12x = 120
x = 10
AB = 5x = 5×10 = 50 cm
BC = 4x = 4×10 = 40 cm
AC = 3x = 3×10 = 30 cm