Question

Sabiendo que el perímetro de cada figura es igual a 120 cm, averiglen el valor de la Incognita ​

Answer 1

Explicación paso a paso:

a)

x + x + 3x + 5 = 120

5x + 5 = 120

5x = 115

x = 23

b) (7x - 4) 5 = 120

35x - 20 = 120

35x = 120 + 20

35x = 140

x = 4

c) 3x + 3x + 9x + 9x = 120

6x + 18x = 120

24x = 120

x = 120/24

x = 5

d) (3x - 13) 6 = 120

18x - 78 = 120

18x = 198

x = 198/18

x = 11