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3b+2p=9.750 dikali 4 12b+8p=39000 -
p=1.500
4b+3(1500)=13.500
4b+4500=13500
4b=13500-4500
4b=9000
b=2.250
2b+3p?
2(2.250)+3(1.500)
=4500+4500
9000
Jadi,jawabannya adalah Rp.9000
4b + 3p = 13500 | x3
3b + 2p = 9750 | x4
--------------------------------
12b+9p = 40500
12b+8p = 39000
-------------------------- ( dikurangi )
p = 1500
( Substitusi )
4b+3p = 13500
4b+3(1500) = 13500
4b+4500 = 13500
4b = 13500-4500
4b = 9000
b = 2250
2b+3p = 2(2250) + 3(1500) = 4500+4500 = 9000