Equations Index

# Linear Equation for First Degree Addition, Formulas & Calculator

First degree equations can be calculated using one of the following 2 formulas: one if you know the result and the value of "x", another if you know the result and the value of "y".

## Formula Knowing the Result and the Value "x"

If you know the result and the "x" value, you can calculate "y" using the following formula:

$$x + y = R$$

"x" value and Result

Equation Result

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### Where:

$$x = "Known value"$$
$$y = "Value to calculate"$$
$$R = "Known value of the result"$$

## Formula Knowing the Result and the Value "y"

If you know the result and the "y" value, you can calculate "x" using the following formula:

$$x + y = R$$

"x" value and Result

Equation Result

Copy paste the following code into your website HTML to display this formula and its calculator.

Our calculators are free to use and mobile friendly. By using them you agree to give attribution to "© WikiFormulas.com". A link is optional but appreciated. Thank you!

### Where:

$$x = "Value to calculate"$$
$$y = "Known Value"$$
$$R = "Known value of the result"$$

## First Degree Equation Definition

It is an equality which has at least one unknown value that must be cleared, it can have an infinite number of possible variables, and can be accommodated in different ways but it must always be an equality.
All first degree equations have exponent 1.

## Equation Definition

It is an equality which has at least one unknown value that must be cleared, these unknowns values are represented by letters.

## Formula Definition

It is a representation of a rule or a general principle using letters. (Algebra, A. Baldor)
When describing formulas in plural, it is also valid to say "formulae".

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