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if −25+k=21 - 25+ k =21 , what is the value of k k ?

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Full solution

Q. if −25+k=21 - 25+ k =21 , what is the value of k k ?
  1. Isolate variable kk: We need to isolate the variable kk on one side of the equation to find its value. We start by adding 2525 to both sides of the equation to cancel out the −25-25 on the left side.\newline−25+k+25=21+25-25 + k + 25 = 21 + 25
  2. Perform addition and simplify: After performing the addition, we simplify both sides of the equation.\newlinek=21+25k = 21 + 25\newlinek=46k = 46
  3. Check math for errors: We check our math to ensure there are no errors. We substitute k=46k = 46 back into the original equation to see if it holds true.\newline−25+46=21-25 + 46 = 21\newline21=2121 = 21\newlineThis is a true statement, so there are no math errors.

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