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= (-180)
7
a. bulan 1 = untung/ + 4 jt
bulan 2 = rugi/- 6 jt
bulan 1+2 = 4 + (-6)
= -2
jadi, Pak Agum mengalami kerugian sebesan 2 jt.
b. total kerugian bulan 3 dan 4 = 2+3 =5 jt
8.
a. langkah Alfin = 10 + (-8) +3
= 5 langkah
b. dari hasil jawaban 8a. Alfin maju 5 langkah
9. banyak siswa lk = 38-15= 23 orang
bnyk sswa lk yg suka mengendarai sepeda = 13-9 = 4
jadi, banyak siswa lk yg tdk suka mengendarai sepeda = 23-4 = 19 orang.
10.
a. bnyk ayam ptg yg masih hdp = 650-65 = 585 ayam
b. selisih ayam yg mati = 65-45 =20