# 13c+100=18c

## Enter Equation or Inequality

Solve the following equation
13c+100=18c

Solve for c
13c + 100 = 18c

## Group variables

Group our variables 13c and 18c
subtract 18c from both sides
13c + 100 - 18c = 18c - 18c

-5c + 100 = 0

## Group constants

Group our constants 100 and 0.
subtract 100 from both sides
-5c + 100 - 100 = 0 - 100

-5c = -100

## Divide each side of the equation by -5

 -5c -5
 =
 -100 -5

c = 20

c = 20

### How does the Equation and Inequalities Calculator work?

Free Equation and Inequalities Calculator - Solves an equation or inequality with 1 unknown variable and no exponents as well as certain absolute value equations and inequalities such as |x|=c and |ax| = c where a and c are constants. Solves square root, cube root, and other root equations in the form ax^2=c, ax^2 + b = c. Also solves radical equations in the form asqrt(bx) = c. Also solves open sentences and it will solve one step problems and two step equations. 2 step equations and one step equations and multi step equations
This calculator has 1 input.

### What 3 formulas are used for the Equation and Inequalities Calculator?

1. One Step Equations (Division): cx = b x = b/c
2. One Step Equations (Addition): x + c = b x = b - c
3. One Step Equations (Subtraction): x - c = b x = b + c

For more math formulas, check out our Formula Dossier

### What 4 concepts are covered in the Equation and Inequalities Calculator?

equation
a statement declaring two mathematical expressions are equal
equation and inequalities
unknown
a number or value we do not know
variable
Alphabetic character representing a number