Matematika

Pertanyaan

tolong bantu ya plisss!!
tolong bantu ya plisss!!

1 Jawaban

  • Susunannya kebawah ya.. :

    # a+b

    1) 1 + (-6)
    = -5
    2) 2 + 7
    = 9
    3) 3+8
    =11
    4) -4+9
    = 5
    5) -5 + (-10)
    = -5 -10 = -15

    # b+a
    1) -6 + 1
    = -5
    2) 7+ 2
    = 9
    3) 8 + 3
    = 11
    4) 9 + (-4)
    = 9-4 = 5
    5) -10+ 5
    = 5

    # (a+b) + c
    1) (1 + (-6)) + (-11)
    = (-5) + (-11)
    = -5 - 11
    = -16

    2) ( 2 + 7) + (-12)
    = 9+ (-12)
    = 9 - 12
    = -3

    3) (3+8) + 13
    = (11) + 13
    = 24

    4)(-4+9) + 14
    = 5 + 14
    = 19

    5) ((-5) + (-10)) + 16
    = (-15) + 16
    = 1

    # a + (b+c)
    1) 1 + ((-6) + (-11))
    = 1 + (-17)
    = 1 - 17
    = -16

    2) 2 + (7+(-12))
    = 2 +(-5)
    = 2-5
    = -3

    3) 3 +(8+13)
    = 3 + 21
    = 24

    4) -4 +(9+14)
    = -4 + 23
    = 19

    5) -5 + ((-10) + 16)
    = -5 + 6
    = 1


    Semoga membantu.. ^_^