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3 years ago

5 (u + 1) -7 = 33 (u - 1) + 2u

Mathematics

1 answer:

frez [133]3 years ago

3 0

Correct Question:

5 (u + 1) - 7 = 3 (u - 1) + 2u.

Solve for u

Answer:

See explanation below

Step-by-step explanation:

In this given question, we are required to find u.

Given the equation:

5 (u + 1) - 7 = 3 (u - 1) + 2u

Required:

Solve for u

To find u, first simplify both sides individually.

Simply 5 (u + 1) - 7:

Expand the parenthesis:

5u + 5 - 7

Collect like terms:

5u - 2

<em>Simplify 3 (u - 1) + 2u:</em>

Expand the parenthesis:

3u - 3 + 2u

Collect like terms:

3u + 2u - 3

5u - 3

Bring both simplified equations together:

5u - 2 = 5u - 3

5u - 5u - 2 = -3

-2 = -3

Since -2 ≠ -3, there is no solution.

Therefore, we can say the equation is invalid.

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3 years ago

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2 years ago

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Evan is on holidays in Beijing, China. He took a taxi from the airport to his hotel. It cost him 375 Chinese yuan. He went $15 A

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This question is solved using proportions, and doing this, it is found that Evan gets 5 Chinese yuans for every Australian dollar.

-----------------------------------------

Evan budgeted $60 for the taxi ride.
He went $15 over, thus, the taxi ride cost $75.
In Chinese yuans, the cost was 375.

-----------------------------------------

75 dollars are worth 375 yuans. How much yuans is a dollar worth?

1 dollar - x yuans

75 dollars - 375 yuans

Applying cross multiplication:

$75x = 375$

$x = \frac{375}{75}$

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Evan gets 5 Chinese yuans for every Australian dollar.

A similar question is given at brainly.com/question/23352001

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2 years ago

5 (u + 1) -7 = 33 (u - 1) + 2u​

5 (u + 1) -7 = 33 (u - 1) + 2u