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3 years ago

2/3b + 5 = 20 - b Solve for b

2 answers:

5 0

Okay, so with these equations, you collect 'like terms.' like terms are basically grouping things that are the same together, so for example a+a-b+2b would be 2a+b.
with this equation you want to do the same.
2/3b + 5 = 20 - b
first, make all the numbers integers (whole numbers). we want to make 2/3b a whole number, so we multiply the whole equation by 3 to keep everything in proportion with each other, thus ending up with
2b + 15 = 60 - 3b
now we collect 'like terms.'
add 3b to both sides gives
5b + 15 = 60
subtract 15 from both sides
5b = 45
divide by 5 to leave the value of b
b = 9

ad-work [718]3 years ago

3 0

Answer: B = 9

Hope this helps!

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Need help with this problem

Ber [7]

$\frac{2x}{x + 3} - \frac{3}{x - 4}$

The LCM of x+3 and x-4 is x² - x - 12

Working out gives;

$\frac{2x^2 - 8x - 3x - 9}{x^2 - x - 12} = \frac{2x^2 - 11x - 9}{x^2 - x - 12}$

Simplify further using equations calculator to get the answer as attached below:

4 0

3 years ago

Fast fat sfast eeeee

OLEGan [10]

Step-by-step explanation:

3/9-2/9
3-2/9
1/9

<h3>stay safe healthy and happy..</h3>

4 0

3 years ago

Read 2 more answers

What is the solution to the system of equations? Use the substitution method. {y=−2x+5 {3x−4y=2 Enter your answer in the boxes.

Nataly_w [17]

1. You have the following equations:
<span>
y=−2x+5 (i)
3x−4y=2 (ii)

2. You must substitute the equation (i) into the equation (ii), as below:

</span>3x−4y=2
3x-4(−2x+5)=2
3x+8x-20=2
11x-20=2

3. Now, you must clear the variable "x":

11x=2+20
x=22/11
x=2

4. You have the value of "x", so you can find the value of "y". When you substitute x=2 into the equation (i), you obtain:

y=−2x+5
y=-2(2)+5
y=-4+5
y=1

5. Therefore, the answer is:

x=2
y=1

7 0

4 years ago

Graph 2x=2y plssssssss

yKpoI14uk [10]

Answer:

4xy

Step-by-step explanation:

2 x 2 = 4, then just plop the x and y down, and there's your answer

8 0

3 years ago

A bookstore is deciding what price it should charge for a certain book. After research, the store finds that if the book's price

Wewaii [24]

Answer:

[130-5(13)] (13) = $845 max revenue.

Step-by-step explanation:

If the number of books sold = 130-5p then revenue will be (130-5p)p = -5p^2+130p

the maximum can be found by graphing or by the fact that the max will be -b/2a = -130/-10 = 13 dollars/book

[130-5(13)] (13) = $845 max revenue.

6 0

3 years ago