Inzanity
Inzanity
12-04-2018
Mathematics
contestada
8x²-x+x²+4x-9x²=18
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Аноним
Аноним
12-04-2018
8x² - x + x² + 4x - 9x² = 18
3x = 18 | 8x
² + x² - 9x² = 0
x = 6 | divide by 3
Answer: x = 6
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