\(x\) is the number of hours Lenny worked in July and \(\frac{1}{2}x\) is the number of hours that Lenny spent working in June.
We know that Lenny worked 84 hours, so we add the two coefficients to get \(1.5x = 84 \)
This means that in the month of July, Lenny worked 56 hours, and in the month of June, Lenny worked 26 hours.
\(x=56 \) and \(1.5x = 28\)
Hope this helps!