Respuesta :

Answer:

Z- 15= -12

Step-by-step explanation:

-2b=6 is incorrect becuase b= -3

4a-5=12 is incorrect because 4a=17.. 17/4=4.25.. A=4.25

5y=y+8 is incorrect because 4y=8.. y=2

Z - 15= -12 is correct because -12+ 15=3... Z=3