Algebra: Chapter 1 Review
Chapter 1 Practice Test and end of Chapter Review. Bring your questions to ask about before the test AND bring your notes on Monday!
Intro to Algebra: Chapter 1, Lesson 7
Solving Equations: An introduction
An EQUATION is a mathematical sentence that uses the equal sign to state that 2 expressions represent the same number or are equivalent. An equation that contains at least 1 variable is called an OPEN SENTENCE.
The set of numbers from which you can select replacements for the variable is called the REPLACEMENT SET, usually noted with squiggly brackets {2, 5, 12}. A replacement for a variable that makes an equation true is called the SOLUTION. To SOLVE and equation means to find all of its solutions. The collection of all the solutions is called the SOLUTION SET, usually contained in the { brackets}.
2 equations are EQUIVALENT if one can be obtained from the others by a sequence of adding, subtracting, multiplying or dividing from both sides of an equation.