Solve for y in the equation 18 + y = c
Check the final answer first, then review the worked steps.
Problem
Solve for y in the equation 18 + y = c
Answer
\(y = c - 18\)
Step-by-step solution
- Isolate y: The goal is to get the variable 'y' by itself on one side of the equation. To do this, we need to eliminate the constant term '18' from the left side.
The given equation is:
$$18 + y = c$$
2. Subtract 18 from both sides: To isolate 'y', subtract 18 from both the left side and the right side of the equation. This maintains the equality.
$$18 + y - 18 = c - 18$$
3. Simplify the equation: On the left side, $18 - 18$ cancels out to 0, leaving just 'y'. The right side remains $c - 18$.
$$y = c - 18$$