Question

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.

Answer 1

Answer:

her brother is 9

Step-by-step explanation:

21-3=18   18 divided by 2 = 9

Answer 2

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