Solving Linear Expressions Chapter 1.3 Solving Linear Expressions #3 Only having one truth about each object, whoever finds it knows as much as one can know about it. Rene Descartes

Terms Equation – Mathematical expression containing an equality. Linear Equation – Equation with only first order variables, NO powers. Solution – The value of a variable(s) that makes an expression true. Equivalent Expressions – When two or more equations have the same solution.

Equivalent Transformations Addition – Subtraction- If a=b, then a+c=b+c If a=b, then a-c=b-c

Equivalent Transformations Multiplication- Division- If a=b, then a·c=b·c If a=b, then ac=bc

Solving Linear Equations Eliminate Grouping Symbols Group Variables Add/Subt. Constants Multy/Divide Coefficients

Note To check your work…. Simply plug in you answer to the original problem

Solving Linear Equations Eliminate Grouping Symbols Group Variables Add/Subt. Constants Multy/Divide Coefficients

Solving Linear Equations Eliminate Grouping Symbols Group Variables Add/Subt. Constants Multy/Divide Coefficients

Solving Linear Equations Eliminate Grouping Symbols Group Variables Add/Subt. Constants Multy/Divide Coefficients

Find all sides of the figure

Catalog purchase You are ordering T-shirts from a catalog. Each T-shirt costs $15. The cost of shipping is $6 no matter how many you order the total cost is $111. How many T-shirts did you order?

Assignment 1.3 p21 3-75 X3