K + M = 220p + Y. Y + M = 140p + K.K + Y = 500p.M= .... ?K + M = 220p + Y Y + M = 140p + K______________+500p +2M = 360p + 500p2M = 360pM = 180p .Jadi Mei memiliki 180 perangko #backtoschoolcampaign
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K + M = 220p + Y.
Y + M = 140p + K.
K + Y = 500p.
M= .... ?
K + M = 220p + Y
Y + M = 140p + K
______________+
500p +2M = 360p + 500p
2M = 360p
M = 180p
.
Jadi Mei memiliki 180 perangko
#backtoschoolcampaign