Question

How would you solve this system?:
u-t=5
10t+u=3(t+u)

Answer 1

I guess you didn't understand my steps

Answer 2

I just don't get the 10t+u=3(t+u) part.

Answer 3

It's not that difficult. Think outside the box

Answer 4

There's actually a difference between the other question. Can other people try and respond to this question as well?

Answer 5

u-t=5
10t+u=3(t+u)
--------------------
u = 5 + t
Substitution
10t + (5 + t) = 3 ( t + (5 + t) )
10t + 5 + t = 3t + 15 + 3t
11t + 5 = 6t + 15
5t = 10
t = 2

u = 5 + t
u = 5 + 2 = 7

Solution ( 2 , 7 )

Answer 6

Thank you!

Answer 7

Glad to help. Thanks for the medal.