Question

Lucinda uses properties of operations to write an expression equivalent to 9+3(5−a)−7a . Which could be the expression that Lucinda wrote?(1 point)
Responses

60−19a
60 minus 19 a

24−10a
24 minus 10 a

24−8a
24 minus 8 a

24−4a
Answer
wroing
Answer
wrong
Answered by GPT 3.5
24 minus 4 a
Answered by GPT 3.5
Apologies for the incorrect response. Let's try again.

Lucinda could have written the expression as:

9 + 3(5 - a) - 7a

Expanding the parentheses:

9 + 15 - 3a - 7a

Combining like terms:

24 - 10a

So, the correct expression that Lucinda could have written is 24 - 10a.
Answered by GPT 3.5
Apologies for the mistake. Let's try again.

Lucinda could have written the expression as:

9 + 3(5 - a) - 7a

Expanding the parentheses:

9 + 3(5) - 3(a) - 7a

Simplifying inside the parentheses:

9 + 15 - 3a - 7a

Combining like terms:

24 - 10a

Therefore, the correct expression that Lucinda could have written is 24 - 10a.