Question

❗помогите пожалуйста ❗(8,4 +x):8,6=10,4.​

Answer 1

$(8.4 + x) \div 8.6 = 10.4 \\ ( \frac{42}{5} + x) \div \frac{43}{5} = \frac{52}{5} \\ ( \frac{42}{5} + x) \times \frac{5}{43} = \frac{52}{5} \\ \frac{42}{43} + \frac{5}{43} x = \frac{52}{5} \\ 210 + 25x = 2236 \\ 25x = 2236 - 210 \\ 25x = 2026 \\ x = \frac{2026}{25}$