# Equation

Written by Jerry Ratzlaff on . Posted in Mathematics

• 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.