Question

Linear equation

Gina is 3 years older than Susan. The sum of their ages is 12 years more than Susan’s age. How old is Susan ?

Answer 1

Susan = x

Gina = 3x

Sum of their ages = 12

Susan's age = ?

We can see that,

`2x=10</p><p></p><p>x = (10)/(2)x= </p><p>2</p><p>10</p><p> </p><p> </p><p></p><p>x = 5x=5`

Susan is 3 years old.