The solution to the linear equation c + 18 = 2c is c = 18.
Let's solve the given linear equation to find the value of c:
c + 18 = 2c
1: Add/subtract to both sides to isolate c:
c + 18 - 18 = 2c - 18
c = 2c - 18
2: Add/subtract to both sides to combine like terms:
c - 2c = 2c - 18 - 2c
-c = -18
3: Divide both sides by the same factor to isolate c:
(-c)/(-1) = (-18)/(-1)
c = 18
Therefore, the value of c in the given system of equations is 18.
The solution to the linear equation c + 18 = 2c is found by isolating c on one side of the equation. Combining like terms, we get -c = -18. Dividing both sides by -1 gives c = 18, confirming the solution.