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
7.3
step-by-step explanation: