Diketahui persamaan matriks (41​52y+3x​)+(2x+42​−96​)=(23​−4−11​) Nilai x+y adalah ...

Pertanyaan

Diketahui persamaan matriks

open parentheses table row 4 5 row 1 cell 2 y plus 3 x end cell end table close parentheses plus open parentheses table row cell 2 x plus 4 end cell cell negative 9 end cell row 2 6 end table close parentheses equals open parentheses table row 2 cell negative 4 end cell row 3 cell negative 11 end cell end table close parentheses

Nilai x plus y adalah ...

I. Roy

Master Teacher

Mahasiswa/Alumni Universitas Negeri Surabaya

Jawaban terverifikasi

Jawaban

nilai x plus y adalah bold minus bold 4

Pembahasan

table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses table row 4 5 row 1 cell 2 y plus 3 x end cell end table close parentheses plus open parentheses table row cell 2 x plus 4 end cell cell negative 9 end cell row 2 6 end table close parentheses end cell equals cell open parentheses table row 2 cell negative 4 end cell row 3 cell negative 11 end cell end table close parentheses end cell row cell open parentheses table row cell 4 plus 2 x plus 4 end cell cell 5 minus 9 end cell row cell 1 plus 2 end cell cell 2 y plus 3 x plus 6 end cell end table close parentheses end cell equals cell open parentheses table row 2 cell negative 4 end cell row 3 cell negative 11 end cell end table close parentheses end cell row cell open parentheses table row cell 2 x plus 8 end cell cell negative 4 end cell row 3 cell 2 y plus 3 x plus 6 end cell end table close parentheses end cell equals cell open parentheses table row 2 cell negative 4 end cell row 3 cell negative 11 end cell end table close parentheses end cell end table

table attributes columnalign right center left columnspacing 0px end attributes row cell 2 x plus 8 end cell equals 2 row cell 2 x end cell equals cell 2 minus 8 end cell row cell 2 x end cell equals cell negative 6 end cell row x equals cell negative 3 end cell end table 

table attributes columnalign right center left columnspacing 0px end attributes row cell 2 y plus 3 x plus 6 end cell equals cell negative 11 end cell row cell 2 y plus 3 open parentheses negative 3 close parentheses end cell equals cell negative 11 end cell row cell 2 y minus 9 end cell equals cell negative 11 end cell row cell 2 y end cell equals cell negative 11 plus 9 end cell row cell 2 y end cell equals cell negative 2 end cell row y equals cell negative 1 end cell end table 

Maka nilai x plus y adalah

x plus y equals negative 3 plus negative 1 equals negative 4

Jadi, nilai x plus y adalah bold minus bold 4

44

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Diketahui matriks A=(2         p4        p​), B=(1    −13       q​), C=(4        410    8​), dan A+2B=C. nilai p + 4q adalah ...

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