Question

What is the value of C in the equation 2C +5(c - 5) =10?

Answer 1

We get the variable c on one side of the equation and everything on the other side of c.

2c + 5(c - 5) = 10 ; Start
2c + 5c - 25 = 10 ; Distribute the 5 across c and -5
7c - 25 = 10         ; Combine the like terms 2c and 5c
7c = 35                ; Add 25 to each side of the equation
c = 5                    ; Divide both sides by the coefficient of c. Which is 7

Answer 2

2C +5(c - 5) =10
2C +5C - 25 =10
7C = 35
C = 5