Question

2,5x+9,5=3-x решите уравнение

Answer 1

2,5х+9,5=3-х;
2,5х+х=3-9,5;
3,5х=-6,5;
х=-13/7
Ответ:-13/7.

Answer 2

$2.5x + 9.5 = 3 - x \\ 2.5x + x = 3 - 9.5 \\ 3.5x = - 6.5 \\ x = - \frac{6.5}{3.5} \\ x = - \frac{65}{35} \\ x = - 1 \frac{30}{35} \\ x = - 1 \frac{6}{7}$