5 (9z + 2) - 5 = 815
To solve the equation 5(9z + 2) - 5 = 815, follow these steps:
1. Distribute the 5 to the terms in parentheses:
45z + 10 - 5 = 815
2. Simplify the equation:
45z + 5 = 815
3. Subtract 5 from both sides of the equation to isolate the variable:
45z = 810
4. Divide both sides of the equation by 45 to solve for z:
z = 810 ÷ 45
5. Simplify the division:
z = 18
Therefore, the solution to the equation is z = 18.