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Jacli1s9abenaderez
Jacli1s9abenaderez Jacli1s9abenaderez
  • 11-07-2016
  • Mathematics
Answered

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

Verified Answer :

dalendrk
dalendrk dalendrk
  • 17-07-2016

\(\left\{\begin{array}{ccc}4x+9y=59\\x+y=17&|multiply\ both\ sides\ by\ (-9)\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}4x+9y=59\\-9x-9y=-153\end{array}\right}\\.\ \ \ -5x=-94\)

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