Respuesta :

Respuesta:

Figura 1 :

2x + 60 = 140

x = 40

Figura 2 :

5x - 10 = 445/3 = 148.333

x = 190/6 = 31.667

Figura 3 :

8x + 20 = 148

2x = 32

Explicación paso a paso:

Figura 1 :

2x + 60 + x = 180

3x = 120

x = 40

Figura 2 :

5x - 10 + x = 180

6x = 190

x = 190/6

Figura 3 :

8x + 20 + 2x = 180

10x = 160

x = 16

---