# Equation

- An equation is a statement that has an equal \( \;(=)\;\) sign in it like:
- \(7x-23=19\;\) or\( \; 19x-14=22-8\; \)

- Equation breakdown
- Expression - Coefficients, constants and variables separate by an operation. \(\;7x-23\;\)
- Coefficient - A number multiplied by a variable. \( \;7\)
- Variable - An unknown number represented by a symbol. \( \; x,\; y,\;z\; \) and so on.
- Operation - addition \( \;(+),\; \) subtraction \( \;(-),\; \) multiplication \( \;(\times),\; \) division \( \;(+)\; \)
- Constant - A fixed number. \( \;23\; and \;19\; \)

- Commutative Property - Moves equation parts around.
- \( a \times b \times c = b \times a \times c = b \times c \times a = c \times a \times b\)

- Algebraic Expression - Includes variables, if not, then it is called an arithmetic expression.

- Arithmetic Expression - Has no variables.