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Diketahui dan Nilai a + 2b yang memenuhi A + B = C...

Diketahui A equals open parentheses table row 6 2 row cell negative 4 end cell 8 end table close parentheses comma space B equals open parentheses table row 0 3 row cell negative 1 end cell 1 end table close parentheses comma dan C open parentheses table row 6 cell 4 a minus 3 end cell row cell 2 b minus 3 end cell 9 end table close parentheses. Nilai a + 2b yang memenuhi A + B = C adalah ...

  1. -5

  2. -1

  3. 0

  4. 2

  5. 4

Jawaban:

A plus B equals C rightwards double arrow open parentheses table row 6 2 row cell negative 4 end cell 8 end table close parentheses plus open parentheses table row 0 3 row cell negative 1 end cell 1 end table close parentheses equals open parentheses table row 6 cell 4 a minus 3 end cell row cell 2 b minus 3 end cell 9 end table close parentheses rightwards double arrow open parentheses table row cell 6 plus 0 end cell cell 2 plus 3 end cell row cell negative 4 minus 1 end cell cell 8 plus 1 end cell end table close parentheses equals open parentheses table row 6 cell 4 a minus 3 end cell row cell 2 b minus 3 end cell 9 end table close parentheses rightwards double arrow open parentheses table row 6 5 row cell negative 5 end cell 9 end table close parentheses equals open parentheses table row 6 cell 4 a minus 3 end cell row cell 2 b minus 3 end cell 9 end table close parentheses

  • 4a - 3 = 5 rightwards arrow a = 2
  • 2b - 3 = -5 rightwards arrow b = -1

Maka, a + 2b = 2 + 2(-1) = 0

0

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