Matematika

Pertanyaan

1. 1/6 × ( X/2 + 3/4 ) = X/2 + 1/3 = ....
2. 2/3 × ( X/8 - 3/4 ) = X/2 - 1/2 =...
3. X - 2 /2 + X - 4/3 = 1/6 =...
4. X + 1/3 - X -4 = 5/12X =......
5.1/2 × ( X - 1 ) - 1/3 × ( X + 3 ) = 1/6 =...
6. 1/3 × ( X - 2 ) - 1/4 × ( X - 5 ) = X/6 =....
7. X + 2/3 - 3X -1 = X/9 =.....
8. X + 3/4 - 2X - 5/5 = 7/10 =.....
9.1/4 × ( X - 3 ) + 1/6 × ( 2X - 3 ) = 4 =....
10. 1/2 ( X + 1/3 ) + 1/4 × ( 2/3X - 1/6 )= X =....


( tOlong dijawab sekarang karena besok mau dkumpul )

1 Jawaban

  • 1. 1/6 × ( X/2 + 3/4 ) = X/2 + 1/3 =
         =1/6 x (x/2-x/2)+3/4-1/3
         =2+9-4/12
         =7/12
    2.
    2/3 × ( X/8 - 3/4 ) = X/2 - 1/2 =
         =2/3 x (x/8-x/2)-3/4+1/2
         =8-9-6/12
         =-7/12
    3.
    X - 2 /2 + X - 4/3 = 1/6
        =x+x-2/2-4/3-1/6
        =2x-6-8-1/6
        =2x-15/6
    4.
    X + 1/3 - X -4 = 5/12X
        =x-x4-12/12-5/12x
        =-8/12-5/12x
    5.
    1/2 × ( X - 1 ) - 1/3 × ( X + 3 ) = 1/6
        =3-2-1/6 (X+X-1+3)
        =2X+2

    6. 1/3 × ( X - 2 ) - 1/4 × ( X - 5 ) = X/66.
        =4-3/12(2X-7)-X/66
        =1/12 (2X-7) - X/66
    7.
    X + 2/3 - 3X -1 = X/9
        =X-3X-1+2/3-X/9
        =-2X-1+2/3-X/9
    8.
    X + 3/4 - 2X - 5/5 = 7/10
       =X-2X+15-20-14/20
       =-X19/20
    9.
    1/4 × ( X - 3 ) + 1/6 × ( 2X - 3 ) = 4
       =3+2/12(X+2X-3-3)-4
       =5/12(3X-6)-4
       =5/12(3X-10)
    10.
    1/2 ( X + 1/3 ) + 1/4 × ( 2/3X - 1/6 )= X
       =2+1/4(X-X+2/3X+1/3-1/6)
       =3/4(2/3X+1/6)
    maaf kalau salah

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