Enter Equation or Inequality

Solve the following equation


Solve for a

a + 8 = 2a

Group variables

Group our variables a and 2a
subtract 2a from both sides

a + 8 - 2a = 2a - 2a

Cancel 2a on the right side:

-a + 8 = 0

Group constants

Group our constants 8 and 0.
subtract 8 from both sides

-a + 8 - 8 = 0 - 8

Cancel 8 on the left side:

-a = -8

Divide each side of the equation by -1


a = 8

Final Answer

a = 8

What is the Answer?
a = 8
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?

a statement declaring two mathematical expressions are equal
equation and inequalities
a number or value we do not know
Alphabetic character representing a number
Example calculations for the Equation and Inequalities Calculator
Equation and Inequalities Calculator Video


Add This Calculator To Your Website