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(10p - 8) - (8p - 10) = 10p - 8 - 8p + 10
= 2p + 2
b) pengurangan m(3n + 5) dari 2 - 10m + 15mn
(2 - 10m + 15mn) - (m(3n + 5)) = 2 - 10m + 15mn - (3mn + 5m)
= 2 - 10m + 15mn - 3mn - 5m
= 2 - 15m + 12mn
semoga membantu ya :)