Вопрос:

1. 15 + x = 45

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Ответ ассистента

Давай решим уравнения по порядку: 1. $15 + x = 45 \implies x = 45 - 15 \implies x = 30$ 2. $47 - x = 13 \implies x = 47 - 13 \implies x = 34$ 3. $(72 + x) - 2 = 92 \implies 70 + x = 92 \implies x = 92 - 70 \implies x = 22$ 4. $204 : x = 102 \implies x = 204 : 102 \implies x = 2$ 5. $x - 17 = 74 \implies x = 74 + 17 \implies x = 91$ 6. $x : 102 = 8 \implies x = 8 \cdot 102 \implies x = 816$ 7. $124 - (x + 44) = 26 \implies x + 44 = 124 - 26 \implies x + 44 = 98 \implies x = 98 - 44 \implies x = 54$ 8. $205 \cdot x = 615 \implies x = 615 : 205 \implies x = 3$ 9. $x - 23 = 68 \implies x = 68 + 23 \implies x = 91$ 10. $67 - x = 68 \implies x = 67 - 68 \implies x = -1$ 11. $(x + 39) - 31 = 42 \implies x + 39 = 42 + 31 \implies x + 39 = 73 \implies x = 73 - 39 \implies x = 34$ 12. $57 + x = 112 \implies x = 112 - 57 \implies x = 55$

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