(8 p / h) * "x" h = p (in dollars).
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in which: "h" = hours ;
"p" = pay (in units of dollars);
"x" = number of hours.
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In the equation, on the left hand side, the unit symbol "h" would "cancel out" to "1" ;
and we would have:
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8 p * x = _[total "p"]__
