##### Enter Equation or Inequality

Solve the following equation

20m+100=80+30m

Solve for m

20m + 100 = 80 + 30m

##### Group variables

Group our variables 20m and 30m
subtract 30m from both sides

20m + 100 - 30m = 30m + 80 - 30m

-10m + 100 = 80

##### Group constants

Group our constants 100 and 80.
subtract 100 from both sides

-10m + 100 - 100 = 80 - 100

-10m = -20

##### Divide each side of the equation by -10

 -10m -10
 =
 -20 -10

m = 2

m = 2

m = 2
##### 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?

One Step Equations (Division): cx = b x = b/c
One Step Equations (Addition): x + c = b x = b - c
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