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Diketahui matriks Jika A + B = C, nilai a + b = .....

Diketahui matriks A equals open parentheses table row cell a plus 2 end cell cell 1 minus 3 b end cell row cell negative 1 end cell cell negative 6 end cell end table close parentheses comma space B equals open parentheses table row cell 2 a end cell cell b minus 3 end cell row cell negative 1 end cell 2 end table close parentheses comma space d a n space C equals open parentheses table row 5 6 row cell negative 2 end cell cell negative 4 end cell end table close parentheses. Jika A + B = C, nilai a + b = .....

  1. -6

  2. -3

  3. -2

  4. 1

  5. 2

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F. Pratama

Master Teacher

Mahasiswa/Alumni Universitas Putra Indonesia YPTK Padang

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straight A plus straight B equals straight C  open parentheses table row cell straight a plus 2 end cell cell 1 minus 3 straight b end cell row cell negative 1 end cell cell negative 6 end cell end table close parentheses plus open parentheses table row cell 2 straight a end cell cell straight b minus 3 end cell row cell negative 1 end cell 2 end table close parentheses equals open parentheses table row 5 6 row cell negative 2 end cell cell negative 4 end cell end table close parentheses  open parentheses table row cell 3 straight a plus 2 end cell cell negative 2 straight b minus 2 end cell row cell negative 2 end cell cell negative 4 end cell end table close parentheses equals open parentheses table row 5 6 row cell negative 2 end cell cell negative 4 end cell end table close parentheses  Perhatikan space pada space baris space pertama space dan space kolom space pertama  3 straight a plus 2 equals 5  3 straight a equals 5 minus 2  3 straight a equals 3  straight a equals 1  Perhatikan space pada space baris space pertama space kolom space kedua  minus 2 straight b minus 2 equals 6  minus 2 straight b equals 6 plus 2  minus 2 straight b equals 8  straight b equals negative 4  Jadi comma space straight a plus straight b equals negative 3

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Carilah nilai-nilai x , y , z , dan u apabila berlaku 4 ( 3 x 2 z ​ y 5 u ​ ) = 2 ( x 3 z ​ y + 2 x 3 u − 6 ​ ) + ( 20 2 ​ y + 3 u + z ​ )

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