#### allegansveritatem

##### Full Member

- Joined
- Jan 10, 2018

- Messages
- 271

I set this up thus:

t + 2u=14

10t+ u= 11u-20

which reduced to:

t+2u=14

10t-10u=-20

I multiplied the top equation by 5

5t + 10u=70

10t - 10u=-20

This works out to:

15t=50 or t=50/15

How can this be right? I have gone over this about 5 times and can't get around this result. Can anyone see where I am straying from the primrose path of truth?