Jawapan

  • Pengguna Brainly
2016-03-21T12:54:59+08:00
M = 135
m = 18 + r
r = j - 30

m = 18 + r
135 = 18 + r
r = 117 cm

r = j - 30
117 = j - 30
j = 147 cm
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