3 years ago

12) (3x + 2 • 8x] - 11. 3x

Mathematics

1 answer:

ANTONII [103]3 years ago

4 0

Answer:

Step-by-step explanation:

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Answer:

Nifal received $ 4 for washing the first car.

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.

Step-by-step explanation:

The problem can be rewritten as follows: Find the sum of two consecutive entire numbers equal to 9. That is:

$x + y = 9$

$y = x+1$

Then, by eliminating y:

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Now, let is clear $x$ :

$2\cdot x = 8$

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$y = 4 + 1$

$y = 5$

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4 and 5 have a sum of 9.

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