Matematika

Pertanyaan

tolong di jawab ya
a.10×-7=5×+15
b.2(×-6)=6
c.3(×+1)=17
d.4(3×-6)=10×+12

tolong di jawab besok di kumpulin ku mohon

1 Jawaban

  • a).
    10x - 7 = 5x + 15
    10x - 5x = 15 + 7
    5x = 22
    x = 22/5 = 4,4

    b).
    2(x - 6) = 6
    2x - 12 = 6
    2x = 6 + 12
    2x = 18
    x = 9


    c).
    3(x + 1) = 17
    3x + 3 = 17
    3x = 17 - 3
    3x = 14
    x = 14/3

    d). 
    4(3x - 6) = 10x + 12
    12x - 24 = 10x + 12
    12x - 10x = 12 + 24
    2x = 36
    x = 18



    CMIIW

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