326,637 views
13 votes
13 votes
Solve 2a5b=-19
3a+5b=9

User Driss Bounouar
by
2.7k points

1 Answer

20 votes
20 votes

Answer:

a=28, b=-15

Explanation:


Method\ by\ linear\ combinaisons\\\left\{\begin{array}c2a+5b&=&-19&-1&3\\3a+5b&=&9&1&-2\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}a&=&28\\5b&=&-75\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}a&=&28\\b&=&-15\\\end{array}\right.\\

User SachinS
by
2.5k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.