\"\"

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The equation is \"\".

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According to addition property of equality: if a = b, then a + c = b + c.

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\"\"       (Add 6 to each side)

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\"\"                   (Apply additive inverse property: \"\")

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k = 19                         (Add: 13 + 6 = 19)\"\"

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Check:

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To check the solution substitute the value of k = 19 in above equation.

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\"\"

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13 = 13                      (Subtract: \"\")

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The equality is true. \"\"

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Graph the solution on a number line\"graph\"\"

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The value of k = 19.