3 years ago

Damon is 7 years older than his brother Mark. The sum of Damon and Mark's age is 29.

Mathematics

1 answer:

Alex73 [517]3 years ago

8 0

Step-by-step explanation:

22 and Damon is 29 years old

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$2x + 9 = 5x$

$5x = 2x + 9$

Subtract sides 2x

$- 2x + 5x = - 2x + 2x + 9$

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Divide sides by 3

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CHECK :

$2x + 9 = 5x$

$2(3) + 9 = 5(3)$

$6 + 9 = 15$

$15 = 15$

So the value is correct.

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Step-by-step explanation:

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It's exponential decay when the base value is < 1. Example:

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Step-by-step explanation:

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