Question

Решите уравнение
3,9-(х-1,2)=6,3
-2/7-(3/14-х)=-4,5

Answer 1

3,9-(х-1,2)=6,3,
3,9 - х + 1,2 = 6,3,
х = 3,9 + 1,2 - 6,3,
х = -1,2,

-2/7-(3/14-х)=-4,5,
-2/7 - 3/14 + х = -4/5,
х = -4/5 + 2/7 + 3/14,
х = -56/70 + 20/70 + 15/70,
х = -21/70,
х = -3/10