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Solve this equation using number sense 10k + 5 = 65

User Scott Rudiger
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1 Answer

22 votes
22 votes

Answer

k = 6

Step-by-step explanation

We are aksed to ssolve the given equation

10k + 5 = 65

Subtract 5 from both sides

10k + 5 - 5 = 65 - 5

10k = 60

Divide both sides by 10

(10k/10) = (60/10)

k = 6

To check, this is when number sense comes into play.

With k = 6,

10k + 5 = 65

10(6) + 5 = 65

60 + 5 = 65

65 = 65

Meaning the solution iss correct.

Hope this Helps!!!

User Itay Podhajcer
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3.0k points