Question

упражнение номер тысячи 56 решите уравнение пожалуйста​

Answer 1

Пошаговое объяснение:

1)

$2x + 9.8 = 13.6 \\ 2x = 13.6 - 9.8 \\ 2x = 3.8 \\ x = 3.8 \div 2 \\ x = \frac{19}{10} = 1 \frac{9}{10} = 1.9$

2)

$10.36 - 3x = 5.86 \\ - 3x = 5.86 - 10.36 \\ - 3x = - 4.5 \\ x = - 4.5 \div ( - 3) \\ x = \frac{3}{2} = 1 \frac{1}{2} = 1.5$

3)

$4.2x - 6 = 3.66 \\ 4.2x = 3.66 + 6 \\ 4.2x = 9.66 \\ x = 9.66 \div 4.2 \\ x = \frac{23}{10} = 2 \frac{3}{10} = 2.3$