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Darya [45]
3 years ago
5

Help me pleaseeeeeee?

Mathematics
2 answers:
8_murik_8 [283]3 years ago
8 0

For this case we must simplify the following expression:

4-5-2x-4y + 4-5x + 7y

We must combine similar terms, taking into account that equal signs are added and the same sign is placed, while different signs are subtracted and the sign of the greater is placed:

4-5 + 4-2x-5x-4y + 7y =\\3-7x + 3y

Answer:

3-7x + 3y

BlackZzzverrR [31]3 years ago
6 0

Answer:

-7x+3y+3

Step-by-step explanation:

(4-5+4)=3

(-2x-5x)=-7x

(-4y+7y)=3y

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Hello!
Tcecarenko [31]

This is simple algebra :)

First, we can write the question as an algebraic equation.

Given that Doug spent 40 more hours than Laura, we can represent Laura as (x) and Doug as (x+40).

"Doug and Laura spent a combined 250 hours." So we can write this as

(x) + (x+40) = 250

Now simplify:

2x + 40 = 250

Solve x by subtracting 40 from both sides of the equation:

2x = 210

Therefore:

x = 210/2

= 105

So Laura (x) spent 105 hours!

4 0
3 years ago
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How do you divide fractions?
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Step-by-step explanation:

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The answer is D because I took the test
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