Hitunglah nilai x dari perbandingan berikut! a. (x-5):40=6:4 b.7:6=(x+4):24

[tex]a. \frac{x-5}{40} = \frac{6}{4} [/tex]
  4(x - 5) = 6(40)
  4x - 20 = 240
  4x = 240 + 20 = 260
  x = 260/4 = 65

[tex]b. \frac{7}{6} = \frac{x+4}{24} [/tex]
  7(24) = 6(x + 4)
  168 = 6x + 24
  168 - 24 = 6x
  144 = 6x
  x = 144/6 = 24