82.4k views
4 votes
Maria wants to solve the following system using the elimination method: 4x+9y=59 and x+y=17What number should the equation x+y=17 be multiplied by to eliminate y

User Zbynour
by
7.6k points

1 Answer

7 votes

\left\{\begin{array}{ccc}4x+9y=59\\x+y=17&|multiply\ both\ sides\ by\ (-9)\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}4x+9y=59\\-9x-9y=-153\end{array}\right}\\.\ \ \ -5x=-94
User Sumitkm
by
7.7k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories