Algebra is a branch of mathematics that involves the study of mathematical symbols and the rules for manipulating these symbols. Algebra is often used to solve equations, which involve finding the value of an unknown variable based on known values.

Algebra is a branch of mathematics that involves the study of mathematical symbols and the rules for manipulating these symbols. Algebra is often used to solve equations, which involve finding the value of an unknown variable based on known values.


Here are some examples of algebraic equations and how to solve them:2x + 3 = 9

To solve this equation for x, we need to isolate x on one side of the equation. We can do this by subtracting 3 from both sides:

2x + 3 - 3 = 9 - 3

2x = 6

Finally, we can solve for x by dividing both sides by 2:

x = 3

So the solution to the equation 2x + 3 = 9 is x = 3.4(x - 2) = 20

To solve this equation, we can start by distributing the 4:

4x - 8 = 20

Next, we can add 8 to both sides:

4x = 28

Finally, we can solve for x by dividing both sides by 4:

x = 7

So the solution to the equation 4(x - 2) = 20 is x = 7.(3y - 1)/2 = 5

To solve this equation for y, we can start by multiplying both sides by 2:

3y - 1 = 10

Next, we can add 1 to both sides:

3y = 11

Finally, we can solve for y by dividing both sides by 3:

y = 11/3

So the solution to the equation (3y - 1)/2 = 5 is y = 11/3.

These are just a few examples of algebraic equations and how to solve them. Algebra is a vast subject with many applications in mathematics, science, engineering, and other fields.