7x - 3 = 39 sloving linear equations

x = 6

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of Equality

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

7x - 3 = 39

Step 2: Solve for x

[Addition Property of Equality] Add 3 on both sides:                                   7x = 42[Division Property of Equality] Divide 7 on both sides:                                x = 6

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x:                                                                                                7(6) - 3 = 39Multiply:                                                                                                           42 - 3 = 39Subtract:                                                                                                          39 = 39

Here we see that 39 does indeed equal 39.

∴ x = 6 is the solution to the equation.

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