 # Chapter 1 Solving Linear Equations. 1.1 Solving Simple Equations.

## Presentation on theme: "Chapter 1 Solving Linear Equations. 1.1 Solving Simple Equations."— Presentation transcript:

Chapter 1 Solving Linear Equations

1.1 Solving Simple Equations

To solve for an equations means… To isolate the variable by doing inverse opertaions

Equivalent Equations Have the same solution

The Addition Property of Equality if a = b, then a + c = b + c The Subtraction Property of Equality if a = b, then a -c = b -c

x + 7 = 2 Show your work exactly like this: Write the problem: Add same number to both sides of “=“: Write answer with box around it - 7 x = -5

The Multiplication Property of Equality If a = b, then ac = bc Division Property of Equality If a = b, then

Solve: 5x = 30 Show your work exactly like this tonight

Solve: -12x = -8

To solve an equation like: Multiply both sides of the equation by the reciprocal of the coefficient

Solve:

Triangle Sum Theorem The sum of the measures of the interior angles of a triangle is 180°. A C B m  A + m  B +m  C = 180°

Homework Textbook Page 7-9 (2-38) even