This question might look tough, but if we break it down, it's super easy! I'll walk you through the steps.

Firstly, we need to figure out the total amount of money she deposited over the 10 months. To figure this out, all we have to do is multiply the $76.50 per month by the 10 months.

76.50 * 10 = 765

There we have it. She deposited a total of $765 over the course of the 10 months. On to the next step.

Second, we need to figure out the total amount of money she spent over the 10 months paying for singing lessons. To do that, all we have to do is multiply the $30.50 it took for each month by the 10 months.

30.50 * 10 = 305

There it is! She spent a total of $305 on singing lessons over the 10 months. On to the next step.

Now, we must subtract the cost of the singing lessons over 10 the months by the amount she deposited over the 10 months. Since she deposited a total of $765 and she spent $305 on singing lessons, here's the equation we're doing.

765 - 305 = 305

There we go! She had a total of $305 left after the 10 months. I'll leave the last step to you, I know you can do it!

If you have trouble figuring it out, post on my profile or PM me and I'll help you. :)

- Sofie

3 0

4 years ago

Read 2 more answers

-4/7+(-4/3) Please help

Doss [256]

Here is your equation:

$-\frac{4}{7} + -\frac{4}{3}$

As you can see, the denominators(bottom number) are different. When adding or subtracting fractions, the denominators must be the same.

To change it, you have to first find the GCM(greatest common multiple), which can be found by listing the multiples of both numbers and finding the common ones.

First list the multiples of both numbers:

$7- 7, 14,21, 28 \\ 3- 3, 6, 9, 12, 15, 18, 21, 24,27$

The only common number is 21. That means your new denominator will be 21. Change both fractions so that they have a denominator of 21.

$-\frac{4 \times 3}{7 \times 3} = -\frac{12}{21} \\ \\ -\frac{4 \times 7}{3 \times 7} = -\frac{28}{21}$

Here is your new equation:

$-\frac{12}{21} + -\frac{28}{21}$

Since both fractions are negative, your answer will be negative. To make things easier, you can just add the two fractions, and add the negative(-) sign.

Add the two fractions:

$\frac{12}{21} + \frac{28}{21} = \frac{40}{21}$