h + 21 1/5 = 30
To solve for h, subtract 21 1/5 on both sides of the equation:
h = 30 - 21 1/5
h = 30 - 106/5
h = 150/5 - 106/5
h = 44/5
h = 8 4/5 hours
Therefore, Richard needs to work an additional 8 4/5 hours to reach 30 hours for the week.
During weekdays, Richard is working as a part-time library assistant at a university. He needs to work for a total of 30 hours a week. For the first three days of the week, he worked 21 1/5 hours. Complete the working equation that represents the number of hours, h, Richard needs to work to reach 30 hours for the week and solve the equation
h + 21 1/5 = _____
h = _____hours
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