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vkrizh
10.12.2020 •
Mathematics
5-number summary for : 62,67,70,74,77,77,80,80,80,82
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Ответ:
(3x + 8) = 50
(5x - 20) = 50
(5x + 4y) = 130
Step-by-step explanation:
3x + 8 = 5x - 20
2x = 28
x = 14
5(14) + 4y + 5(14) - 20 = 180
y = 15