Question 934801
x = 6 cent stamps
y = 8 cent stamps
z = 15 cent stamps
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x = 3y
z = 6 + x
6x + 8y + 15z = 516
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put the system of linear equations into standard form
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x - 3y = 0
x - z = -6
6x + 8y + 15z = 516
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solution:
x = 6 cent stamps = 18
y = 8 cent stamps = 6
z = 15 cent stamps = 24
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