Table of Contents
Some Insight into Simple Equations
An equation is a mathematical statement that two things are equal. In algebra, an equation is usually a statement that two expressions are equal. For example, the equation x + 2 = 4 states that the sum of x and 2 is equal to 4.
To solve an equation, you must find a value for the variable that makes the equation true. For example, to solve the equation x + 2 = 4, you would add 2 to both sides of the equation to get x = 4.
What is a Simple Equation?
A simple equation is an equation that has one or two variables. The equation is solved by solving for the variable.
Solve the Sum
The sum is 9 + 5 = 14.
What is the Difference Between Variables and Constants in a Simple Equation?
A variable is a letter or symbol that represents a number that can change. A constant is a letter or symbol that represents a number that does not change.
What are the Other Methods of Solving Equations?
There are other methods of solving equations, including graphing and using the quadratic formula, but the most common is using substitution.
What is the Application of Simple Equations?
The application of simple equations is solving for an unknown value in a mathematical equation. The equation is solved by isolating the unknown value on one side of the equation and solving for it.
How to Solve a Simple Equation with Fractions?
To solve a simple equation with fractions, divide both sides of the equation by the denominator of the fractions.
Simple Equations for Class 7 NCERT
1. Linear equation in two variables
ax + by = c
2. Quadratic equation in two variables
ax2 + bx + c = 0
3. Cubic equation in two variables
ax3 + bx2 + cx + d = 0
4. System of linear equations in two variables
ax1 + bx2 = c
dx1 + ey2 = f
