Solve for: 48=k-9-11

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Expression: $48=k-9-11$

Calculate the difference

$48=k-20$

Move the variable to the left-hand side and change its sign

$48-k=-20$

Move the constant to the right-hand side and change its sign

$-k=-20-48$

Calculate the difference

$-k=-68$

Change the signs on both sides of the equation

$k=68$

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