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'''Algebra''' is a branch of mathematics.
'''Algebra''' is a branch of mathematics. It is the study of relationships between numbers and forms one of the two most basics parts of mathematics, the other being geometry, the study of relationships in space. It involves finding an unknown answer to a mathematical problem. It is a generalization of arithmetic in which letters stand for numbers in order to accomplish this purpose. It was invented in ancient times by a Persian astronomer named al-Khwarizmi.
Ordinary arithmetic deals with ''specific'' numbers, treated individually: 4 + 7 = 11.
Ordinary arithmetic deals with ''specific'' numbers, treated individually: 4 + 7 = 11.
*x could be 5 and y could be 6
*x could be 5 and y could be 6
*x could be 10 and y could be 1.
*x could be 10 and y could be 1.
==Algebra as a "gatekeeper subject"==
==Algebra as a "gatekeeper subject"==