## How to solve an Equation

# Theory of Equation of First Degree

To solve an Equation of First Degree follow these steps:

- If there are parentheses and/or brackets, they are resolved with the necessary operation.

- If there denominators, it is estimated the m.c.m. and we reduce all fractions to this common denominator.

- Denominators are removed once they are reduced all terms to m.c.m.

- All terms are left accompanied by “x” on one side of equality and other terms on the other side of equality.

- Each term is simplifies the most possible.

- Solve the unknown “x” to calculate its value.

Example 1:

Example 2:

# Theory of Second Degree Equations

To solve as second degree equation follow these steps:

- If there are parentheses and/or brackets, they are resolved with the necessary operation.

- If there are denominators, it is estimated the m.c.m. and we reduce all fractions to this common denominator.

- Denominators are removed once they are reduced all terms to m.c.m.

- Each term is simplifies the most possible.

- All terms are left on a member and it equals to zero.

- It is applied the following formula:

Example:

If the equation is incomplete second degree type:

We draw “x” common factor resolved as follows:

If you type:

Solve “x”:

Example:

*(This theory about ecuations continue on the next post “How to solve an ecuation II”)*

#
You can download the App **BioProfe READER** to practice this theory with **self-corrected exercises**.