- #1

- 29

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In my textbook it simplifies (208 − 18y)/7 to (29-2y) + (5-4y)/7

How does this happen?

How does this happen?

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- Thread starter Gravitational
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- #1

- 29

- 0

In my textbook it simplifies (208 − 18y)/7 to (29-2y) + (5-4y)/7

How does this happen?

How does this happen?

- #2

- 606

- 1

In my textbook it simplifies (208 − 18y)/7 to (29-2y) + (5-4y)/7

How does this happen?

[itex]29-2y+\frac{5-4y}{7}=\frac{7\cdot 29 - 7\cdot 2y + 5 - 4y}{7} = \frac{208-18y}{7}[/itex]

DonAntonio

- #3

- 29

- 0

Yes I know that, I also tried it in reverse. But how can it be done without doing it in reverse.

- #4

- 606

- 1

Yes I know that, I also tried it in reverse. But how can it be done without doing it in reverse.

Errr...[itex]208 = 29\cdot 7 + 5\,,\,\,and\,\,18 = 7\cdot 2 + 4[/itex]...what else?!

DonAntonio

- #5

HallsofIvy

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