Question

3 х-4=х+7 реши уравнение
2(х-5)+3х=4-3х реши уравнение

Answer 1

Объяснение:

$3x - 4 = x + 7 \\ 2x = 11 \\ x = 5.5$

$2(x - 5) + 3x = 4 - 3x \\ 2x - 1 0+ 3x = 4 - 3x \\ 5x + 3x = 4 + 10 \\ 8x = 14 \\ x = 14 \div 8 \\ x = 7 \div 4 = \frac{7}{4} = 1 \frac{3}{4}$