###
**Be SBI PO, IBPS, SSC CGL, Insurance
Exams, Railway Recruitment Board Exams or any other competitive exam, math
equations are asked in all competitive exams. **

While
preparing for competitive exams, one topic that you definitely cannot afford to
skip is Math Equations. Questions from Math Equations can be both- simple and
complex, so let us start right from the scratch and discuss what is an equation
and the different kinds of math equations. The ability to solve math equations
will guarantee that you can easily solve questions on topics like Averages, Ratio
and Proportion, Problems on Ages and many more.

###
**What is an Equation?**

An equation
is a mathematical statement that equates the given conditions by expressing
them in a mathematical

**with***expression***. The two conditions to be equated are written on either sides and then a ‘=’ (equal to) sign is put between them.***variables*###
**What are the Elements
in Math Equations?**

An equation is made up of many elements like- variables, co-
efficient, constant, expression and operator.

A

**is an alphabet that denotes a number that varies/ changes from situation to situation of a known mathematical question or experiment. Some common alphabets used as variables in math equations are-***variable**x, y, z*

A

**is a number that is written before a variable and multiplied with it. For example, when you write ‘5x + 11’,***co- efficient***is the co- efficient of x.***5*
A

**is a number on its own whose value does not change. Math Equations are a combination of variables and constants. Do not confuse a constant with a co-efficient because constants are terms without variables. For example, when you write ‘5x + 11’,***constant***is the constant.***11*
An

**is a combination of constants, co-efficient, variables and operator. However you must not mix it up with an equation because unlike math equations expressions do not equate two conditions, they only represent a condition. For example, ‘***expression***’ is an expression.***5x + 11*
An

**in math equations symbolizes a mathematical operation like addition or subtraction. For example, when you write the expression ‘5x + 11’***operator***is the operator in this expression.***+*
With these terms in place, now you what is an equation. Let’s
discuss what the different kinds of math equations are.

###
**What are Linear
Equations? **

Math Equations where the highest power of a variable is one
are called a linear equation. In a linear equation the variable does not occur
in any other power, however there is no cap on the number of variables in math
equations.

The general forms of linear equations are –

Here x, y and z are
variables and a, b, c and d are constants.

###
**What are Quadratic
Equations?**

Math Equations where the highest power of a variable is two
are called a quadratic equation. The other powers are positive integers, so it
is actually a second degree polynomial equated to zero.

The general from of quadratic equations is-

Here x is the only variable and a, b and c are constants and
a not equal to zero.

Now that you know what is an equation, time to move to the
next part the series where we will discuss how to solve math equations.

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