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4 b + 3 p = 9500 | x 1 | 4 b + 3 p = 9500
7 p = 3500
p = 500
2 b + 5 p = 6500
2 b + (5 x 500) = 6500
2 b + 2500 = 6500
2 b = 6500 - 2500
2 b = 4000
b = 2000
2 b + p = (2 x 2000) + 5==
= 4000 + 500
= 4500