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2x + 3y + z = 15.350 (x2)3x + y + 2z = 15.850 (x1)
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4x + 6y + 2z = 30.700
3x + y + 2z = 15.850
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x + 5y = 14.850
2x + 3y + z = 15.350 (x3)
x + 2y + 3z = 12.300 (x1)
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6x + 9y + 3z = 46.050
x + 2y + 3z = 12.300
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5x + 7y = 33.750
x + 5y = 14.850 (x5)
5x + 7y = 33.750 (x1)
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5x + 25y = 74.250
5x + 7y = 33.750
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18y = 40.500
y = 40.500 / 18
y = 2.250
x + 5y = 14.850
x + 5(2.250) = 14.850
x + 11.250 = 14.850
x = 14.850 - 11.250
x = 3.600
2x + 3y + z = 15.350
2(3.600) + 3(2.250) + z = 15.350
7.200 + 6.750 + z = 15.350
13.950 + z = 15.350
z = 15.350 - 13.950
z = 1.400
maka
x + y + z = 3.600 + 2.250 + 1.400 = 7.250