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04-01-2018
Mathematics

contestada

Solve the system
12x+2y=86
6x+2y=56

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Аноним Аноним

04-01-2018

12x+2y=86 -
6x+2y=56
-------------------
6x = 30 => x = 30 : 6 = 5

2y = 56 - 30 => 2y = 26 => y = 13

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