Algebra is a branch of mathematics that deals in representing numbers through variables.
Algebra also deals with symbols, relations, functions, and equations.
Algebra can mainly be divided into two parts, elementary algebra and abstract algebra or modern algebra
5 + a = 12
Here, the variable 'a' represents a whole number and it can be solved to find its actual value. 'a' must be equal to 7 as 5 + 7 = 12.
Step 1: y - 8 = 12 [Original Equation.]
Step 2: y - 8 + 8 = 12 + 8 [Add 8 on each side to isolate the variable y.]
Step 3: y = 20 [Add 12 and 8 to get 20.]
Q1: Solve for x: x + 5 = 10
Q2: Solve for y: y - 3 = 7
Q: What is a variable?
A: A variable is a symbol, usually a letter, that represents an unknown number.
Q: How do you solve an equation?
A: To solve an equation, you need to isolate the variable by performing the same operations on both sides of the equation.