hello i dont understand that what is algebra how to solve algebra question

Algebra is a part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
It has so many chapters like Matrices, Determinants, Sequence and series, functions etc
You should start first with the basics of Algebra like Basic Inequalities and Inequations then Set theory, Relations and Functions (basics of Algebra) and then complex numbers or logarithms etc. Follow a proper order.