##### Enter Equation or Inequality

Solve the following equation

r+r+0.45=1.25

Solve for r

r + r + 0.45 = 1.25

(1 + 1)r = 2r

##### Form modified equation

2r + 0.45 = + 1.25

##### Group constants

Group our constants 0.45 and 1.25.
subtract 0.45 from both sides

2r + 0.45 - 0.45 = 1.25 - 0.45

2r = 0.8

 2r 2
 =
 0.8 2

r = 0.4

r = 0.4

#### You have 2 free calculationss remaining

r = 0.4
##### 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