Please help !!!! :)) What is the value of x?
2 answers:
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Answer:
6 days
Step-by-step explanation:
Hi there!
Let d be equal to the number of days that pass.
<u>1) Form expressions</u>
We're told that our sister earns $30 a day, but needs to pay $60 at first:
We're also told that we earn $20 a day:
<u>2) Form an equation</u>
We're solving for the number of days that pass (d) in order for both our and our sister's income to equal each other.
For our income and our sister's income to equal each other, the following must be true:
Because the only variable here is d, we can simply isolate it to determine the number of days that would pass.
<u>3) Solve for d</u>
Subtract 30d from both sides to isolate d on one side
Divide both sides by -10 to isolate d
Therefore, for both our income and our sister's income to become equal, 6 days would pass.
I hope this helps!
You first divide the numerator(top) by the denominator(bottom)
12÷8=<u />