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1/2r - 2 = 1/3r + 5/3
1/2r - 1/3 r = 5/3 + 2
1/6 r = 11/3
3r = 66
r = 22
usia Reni sekarang adalah 22 tahun
3(x-4) = 2(x+5)
3x-12 = 2x+10
3x-2x = 10+12
x = 22 tahun