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2 years ago

Genevieve is 3 years older than twice her brother’s age. Genevieve is 21 years old. Write an equation to find her brother’s age.

Mathematics

2 answers:

Simora [160]2 years ago

7 0

Answer:

her brother is 9

Step-by-step explanation:

21-3=18 18 divided by 2 = 9

adoni [48]2 years ago

3 0

Answer:

Genevieve's brother is 9 years old

Step-by-step explanation:

The equation (Genevieve "G", the brother "B")

$G=2B+3$

$21=2B+3$

$21-3=2B$

$18=2B$

$\frac{18}{2} =B$

$9=B$

Hope this helps

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Step-by-step explanation:

We are given the following in the question:

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Dividing the two equations, we get,

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