2 years ago

7a-3b-a+8-9b Pls help!

Mathematics

2 answers:

iVinArrow [24]2 years ago

7 0

Answer:

6a-12b+8

Step-by-step explanation:

Im pretty sure this is the answer but if it's not im so sorry

hram777 [196]2 years ago

4 0

Answer:

6 − 1 2 + 8

Step-by-step explanation:

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The answer is C) NO solution.

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David, Egil and Frances share money in the ratio 2:7:9. Frances gets ?80 more than David. Explain how you know Egil gets ?80.

Natalija [7]

Step-by-step explanation:

We have been given that David, Egil and Frances share money in the ratio 2:7:9.

Let 2x, 7x and 9x be the amounts of money that David, Agil and Frances get respectively.

We are told that Frances gets $80 more than David. So we can write this information in an equation as:

$9x=2x+80$

Now let us solve for x.

$9x-2x=80$

$7x=80$

$x=\frac{80}{7}$

Now let us substitute $x=\frac{80}{7}$ in 7x (amount of money that Egil gets).

$\text{ Amount of money that Egil will get}=7\cdot \frac{80}{7}$

Upon cancelling out 7 from numerator and denominator we will get,

$\text{ Amount of money that Egil will get}=80$

Therefore, Egil will get $80.

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3 years ago