86.4k views
5 votes
Decide !!!!!!!!!!!!!!!!!!

Decide !!!!!!!!!!!!!!!!!!-example-1
User Geekosaur
by
5.7k points

1 Answer

3 votes

Make note of the coefficients in the first and fourth equations. They've been conveniently picked so that subtracting one equation from the other eliminates every variable but t. We have

(3r + 2s + t + 2u + 3v) - (3r + 2s + 3t + 2u + 3v) = 7 - 17

-2t = -10

t = 5

User Biesi
by
7.0k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.