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To solve the equation
, start by isolating the term with
. You can do this by adding 18 to both sides, resulting in
. Thus,
. Now, divide both sides by 20 to find
:
And there you have it! The solution is
.
Try substituting
back into the original equation to verify your answer. A common mistake is overlooking the arithmetic—double-check your addition and subtraction! Always ensure you’re working systematically to avoid any slip-ups along the way.