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melisa1 [442]
3 years ago
6

3x - 7 = 29 What is x

Mathematics
1 answer:
vesna_86 [32]3 years ago
6 0

Answer:

x = 12

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

3x - 7 = 29

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Add 7 on both sides:                    3x = 36
  2. Divide 3 on both sides:                x = 12

<u>Step 3: Check</u>

<em>Plug in x to verify it's a solution.</em>

  1. Substitute:                    3(12) - 7 = 29
  2. Multiply:                        36 - 7 = 29
  3. Subtract:                       29 = 29

Here we see that 29 does indeed equal 29.

∴ x = 12 is a solution of the equation.

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