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Mathematics, 18.03.2021 01:40 kobiemajak

0.8 (2x + x) + 3(7 - 4.1x) = x + 21

12 (6x + 22y) =
x +
y

(C) (3x -
) - (6x + 1) = -3x - 2

(D) 112x + 27y =
(12x + 9y)

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0.8 (2x + x) + 3(7 - 4.1x) = x + 21

12 (6x + 22y) =
x +
y

(C)...
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