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## Homework Statement

Today i am half as old as my brother was 7 years ago. I am 11 years younger than my brother. How old am i?

**2. The attempt at a solution**

Let I = Me and B = Brother

Let I = Me and B = Brother

Let: Brother age = x

Hence my age now = x -11

So, 7 years ago:

my brother was (x - 7)

and I was (x - 11 - 7)

Lets set an equation:

1/2 x I = B

This gives us 1/2 (x - 18) = x - 7

x - 18 = 2x - 14

x = -4

Why do I get a negative age??? Can anyone help solve this one please?