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3 years ago

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

Mathematics

2 answers:

Taya2010 [7]3 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

Scilla [17]3 years ago

5 0

Answer:

k = 4

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

Step-by-step explanation:

Step 1: Define

5k + (-7) = 13

Step 2: Solve for k

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

Step 3: Check

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

Substitute in k: 5(4) + (-7) = 13
Multiply: 20 + (-7) = 13
Add: 13 = 13

Here we see that 13 does indeed equal 13.

∴ k = 4 is the solution to the equation.

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