This week, sam spent 2 3/4 hours on his homework. this was 2 2/3 times less than last week. how many hours did he spend on homework last week? offering 30 points

7.315 hours

Step-by-step explanation:

1. You can convert the mixed numbers given in the problem to decimal numbers. To do this, you must divide the numerator by the denominator of the fraction and add the result to the whole part. Therefore, you have

2. Then, based on the information given in the problem you can write the  following expression, where x is the  number of hours he spent on homework last week:

the least common denominatore of 7 and 2 is 9

step-by-step explanation:

7+2=9

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