Question

2,7x - 2,8 = 4,2 – 4,3x
$66 \times 3$
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Answer 1

Ответ:

$2.7x - 2.8 = 4.2 - 4.3x \\ 2.7x + 4.3x = 4.2 + 2.8 \\ 7x = 7 \\ x = 1$