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6x + 5y = 11.200 | x8 | 48x + 40y = 89.600
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-4y = -5.600
y = 5.600/4 = 1.400
8x + 6 (1.400) = 14.000
8x + 8.400 = 14.000
8x = 5.600
x = 5.600/8 = 700
5(700) + 8(1.400)
3.500 + 11.200 = 14.700