Solve the equation for z.

7z+3z=9z-4

1 answer

To solve the equation for z, we can simplify both sides of the equation first.

On the left side, we have 7z + 3z = 10z.
On the right side, we have 9z - 4.

Now we can rewrite the equation as:
10z = 9z - 4.

To isolate z, we can subtract 9z from both sides:
10z - 9z = 9z - 9z - 4.
This simplifies to:
z = -4.

Therefore, z equals -4.