Respuesta :

Answer:

w = 3

z= 31

Step-by-step explanation:

4w - 2 = w +7

4w -w = 7+2

3w= 9

w = 3

sum of angles on a line is 180

3z+25+2z=180

5z=180-25

5z=155

z=155/5

z= 31