Question

3х+4=8

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Answer 1

$3x + 4 = 8 \\ 3x = 8 - 4 \\ 3x = 4 \\ x = 4 \div 3 \\ x = \frac{4}{3}$

Проверка:

$3 \times \frac{4}{3} + 4 = 8 \\ 4 + 4 = 8 \\ 8 = 8$

Answer 2

$3x + 4 = 8 \\ x = 1.33 \\ 3x = 8 - 4 \\ 3x = 4 \\ x = \frac{4}{3} = 1.33$