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aniked [119]
2 years ago
9

5k + (-7) = 13 what does k =

Mathematics
2 answers:
Taya2010 [7]2 years ago
7 0

Answer:

Step-by-step explanation:

Here you go mate

PEMDAS

Parenthesis

Exponent

Multiplication

Division

Addition

Subtraction

Step 1

5k+(-7)=13  Equation/Question

Step 2

5k+(-7)=13  Remove parenthesis

5k=20

Step 3

5k=20  Divide 5 from the sides             Check (5)(4)=20

answer

4

Scilla [17]2 years ago
5 0

Answer:

k = 4

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

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

Step-by-step explanation:

<u>Step 1: Define</u>

5k + (-7) = 13

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

  1. Simplify equation:                             5k - 7 = 13
  2. Addition Property of Equality:          5k - 7 + 7 = 13 + 7
  3. Simplify equation:                             5k = 20
  4. Division Property of Equality:           5k/5 = 20/5
  5. Simplify equation:                             k = 4

<u>Step 3: Check</u>

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

  1. Substitute in <em>k</em>:                    5(4) + (-7) = 13
  2. Multiply:                               20 + (-7) = 13
  3. Add:                                     13 = 13

Here we see that 13 does indeed equal 13.

∴ k = 4 is the solution to the equation.

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