3 m = 300 cm = a + b.............(1)
700 cm = a + c.........................(2)
(2) - (1)
700 = a + c
300 = a + b
------------------ -
400 = c - b
keterangan
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3 m = 300 cm = a + b.............(1)
700 cm = a + c.........................(2)
(2) - (1)
700 = a + c
300 = a + b
------------------ -
400 = c - b
keterangan