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german
3 years ago
11

Solve for 5(2 – 8) = 20

Mathematics
2 answers:
gladu [14]3 years ago
6 0

Answer:

Step-by-step explanation:

5x - 40 = 20

5x = 20 + 40

5x = 60

x = 60/5

x = 12

dolphi86 [110]3 years ago
5 0

Answer:

x = 12

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

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

5(x - 8) = 20

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

  1. Divide 5 on both sides:                     x - 8 = 4
  2. Add 8 on both sides:                         x = 12

<u>Step 3: Check</u>

<em>Plug in x into the original equation to verify it's a solution.</em>

  1. Substitute in <em>x</em>:                    5(12 - 8) = 20
  2. Subtract:                              5(4) = 20
  3. Multiply:                               20 = 20

Here we see that 20 does indeed equal 20.

∴ x = 12 is a solution to the equation.

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