We can solve linear equations consisting of 2 variables by taking value of one variable from one of the equation and putting into the other.

## How to solve Linear Equations consisting of one variable?

The general form of linear equation consisting of one variable can be written as where is the only variable and are real numbers.

## What is Linear Equation?

**Linear equation** is the equation in which all the variables have exponent equal to 1. Lets take an example of linear equation . In this equation, we have just one variable and we can clearly notice that exponent of is 1. Similarly we can write few more examples of linear equations:

## How to check if the given number is divisible by any number from 2 to 11?

**Divisibility Tests**

**How can you know that a particular large number is divisible by 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11.**

This article will help you to learn about divisibility tests for numbers 2 to 11.

## GMAT Prep: How to solve Quadratic Equations using Quadratic Formula?

We can solve quadratic equations by factorization, completing square and using quadratic formula. After practicing each method, you will be able to choose the method suitable for the given equation. In this article, we will learn the use of quadratic formula to solve quadratic equations.

To solve any given quadratic equation, we can use quadratic formula:

Let's solve one quadratic equation using Quadratic Formula. Suppose we have quadratic equation

By comparing this quadratic equation with the general quadratic equation , we get and

Putting the values of a, b and c in the quadratic formula we get,

And,

And,

Similarly, we can use quadratic formula to solve any given quadratic equation.

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