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Diketahui m dan n merupakan penyelesaian dari sist...

Diketahui m dan n merupakan penyelesaian dari sistem persamaan open curly brackets table attributes columnalign left end attributes row cell 3 x plus 2 y equals 17 end cell row cell 2 x plus 3 y equals 8 end cell end table close

Nilai m+n = ....

  1. 9

  2. 8

  3. 7

  4. 6

  5. 5

Jawaban:

M i s a l colon space 3 x plus 2 y equals 17 space space space space horizontal ellipsis space left parenthesis 1 right parenthesis  space 2 x plus 3 y equals 8 space space space space space horizontal ellipsis space left parenthesis 2 right parenthesis space  U n t u k space m e n c a r i space p e n y e l e s a i a n n y a comma space e l i m i n a s i space s a l a h space s a t u space v a r i a b e l space d a r i space p e r s a m a a n space left parenthesis 1 right parenthesis space d a n space left parenthesis 2 right parenthesis comma space m i s s a l space e l i m i n a s i space v a r i a b e l space x comma space y a i t u  colon 3 x plus 2 y equals 17 space open vertical bar x space 2 close vertical bar space 6 x plus 4 y equals 34  space space 2 x plus 3 y equals 8 space space space open vertical bar x space 3 close vertical bar space bottom enclose 6 x plus 9 y equals 24 end enclose space minus  space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space minus 5 y equals 10 left right arrow y equals negative 2    S e l a n j u t n y a space s u b s t i t u s i k a n space n i l a i space y equals negative 2 space k e space s a l a h space s a t u space p e r s a m a a n comma space m i s a l space p e r s a m a a n space left parenthesis 2 right parenthesis comma space d i p e r o l e h colon  space 2 x plus 3 left parenthesis negative 2 right parenthesis equals 8 space  2 x equals 14  space x equals 7 space  K a r e n a space m space d a n space n space m e r u p a k a n space p e n y e l e s a i a n n y a comma space s e h i n g g a colon  space m equals x equals 7 space d a n space n equals y equals negative 2 space  J a d i comma space n i l a i space d a r i space  space m plus n equals 7 plus left parenthesis negative 2 right parenthesis equals 5.

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