Matematika

Pertanyaan

A=2a+5b+8 . B=a+3b+4 . A+B=........ A-B=............

1 Jawaban

  • A = 2a + 5b + 8
    B = a + 3b + 4

    A + B
    = 2a + 5b + 8 + a + 3b + 4
    = 2a + a + 5b + 3b + 8 + 4
    = 3a + 8b + 12

    A - B
    = 2a + 5b + 8 - (a + 3b + 4)
    = 2a + 5b + 8 - a - 3b - 4
    = 2a - a + 5b - 3b + 8 - 4
    = a + 2b + 4

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