what is value of z if the sum of 9z+9=180
180-9=171
9z=171
z=171/9
z=19
To find the value of z, we can solve the equation 9z + 9 = 180 by isolating z.
Step 1: Subtract 9 from both sides of the equation:
9z + 9 - 9 = 180 - 9
9z = 171
Step 2: Divide both sides of the equation by 9:
9z/9 = 171/9
z = 19
Therefore, the value of z is 19.
9z+9=180
9z=171
z=171/9
z=19