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02-10-2020
Mathematics

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solve for k: 31 - 3k = 10

Respuesta :

02-10-2020

Answer:

k = 7

Step-by-step explanation:

Step 1: Write equation

31 - 3k = 10

Step 2: Solve for k

Subtract 31 on both sides: -3k = -21
Divide both sides by -3: k = 7

Step 3: Check

Plug in k to verify it's a solution.

31 - 3(7) = 10

31 - 21 = 10

10 = 10

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