Respuesta :

4Cat7

Answer:

<B = 47

Step-by-step explanation:

(5x+7) = (3x+23)

5x+7 = 3x+23

2x+7 = 23

2x = 16

2x/2 = 16/2

x = 8

<B = 3x+23

<B = 3(8)+23

<B = 24 + 23

<B = 47