Question

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Answer 1

Ответ: 4

$y = 4 - 0.5x \\ y = 2 \\ 4 - 0.5x = 2 \\ 0.5x = 4 - 2 \\ 0.5x = 2 \\ x = 2 \div 0.5 \\ x = 20 \div 5 \\ x = 4$