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64=4(8+t+2+t)
64= 4(10+2t)
64/4+10+2t
16=10+2t
16-10=2t
6=2t
6/2=t
3=t
158=2(p.l+p.t+l.t)
158=2(8.5+8.3+5.3)
158=2(40+24+15)
158= 2(79)
158=158 (benar)
V = p . l . t
= 8.5.3
= 120
Dngn prsamaan linear
4.8 + 4(t+2) +4t=64
32+4t+8+4t=64
40+8t=64
2.8.(t+2)+2.8.t+2.(t+2) t =158
16t+32+16t+2t^+4t=158
36t+32+2t^=158
40+8t=64
2t^+36t+32=158
(sampek sini bingung)
maaf ya gak bisa bantu sampek akhir