Question

Please
Help me asap!!

Answer 1

Answer: z=12

Explanation:

`11z-9-10z+7=10\\z-9+7=10\\z-2=10\\z=12`

Answer 2

z -2 = 10

Explanation:

11z-9-10z+7 = 10

Combine like terms on the left side

11z -10z -9+7 =10

z -2 = 10