What is the solution of the equation

z = 4

since when does 30 / 10 equal 4 ?????

Here are the real answers. Don't always rely on the bots.

1: Subtract 2 from both sides.
2: 3
3: He needs to reverse the order of operations.
4: 2y - 7 = 15
5: 6 + x/4 = 1

Bird Brain is correct for anyone who want to know