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
5 answers
24 minus 4 a
wroing
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.
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.
wrong
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.
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.