1) a) P = 2(a + b)
2(4x + x) = 124
2*5x = 124
10x = 124
x = 12.4 см
б) 6x - x = 14
5x = 14
x = 2.8 кг
1) a) P = 2(a + b)
2(4x + x) = 124
2*5x = 124
10x = 124
x = 12.4 см
б) 6x - x = 14
5x = 14
x = 2.8 кг