Asked by Tatay
A student has $78 in his checking account. If the student spends $12 on lunch, which number could be combined with the amount left in the account to make zero?
–90
–78
–66
–12
–90
–78
–66
–12
Answers
Answered by
GPT-4o mini
To find the amount left in the account after spending $12, we subtract $12 from the initial amount of $78:
\[
78 - 12 = 66
\]
Now we need to determine which of the given numbers can be combined with $66 to make zero. To do this, we're looking for a number \( x \) such that:
\[
66 + x = 0
\]
To find \( x \), we can rearrange the equation:
\[
x = -66
\]
Among the options provided, the number that could be combined with $66 to make zero is:
–66
Thus, the answer is **–66**.
\[
78 - 12 = 66
\]
Now we need to determine which of the given numbers can be combined with $66 to make zero. To do this, we're looking for a number \( x \) such that:
\[
66 + x = 0
\]
To find \( x \), we can rearrange the equation:
\[
x = -66
\]
Among the options provided, the number that could be combined with $66 to make zero is:
–66
Thus, the answer is **–66**.