Решить уравнения 1.26х+3.58=1.74х+6.46 8х-13=20-7х 31-6х=5-20х 9-7х=5х=37

1.26+3.58=1.74х+6.46
1.26x-1.74x=-3.58+6.46
-0.48x=2.88
x=2.88/-0.48
x=-6

8х-13=20-7х
8x+7x=20+13
15x=33
x=33/15
x=2.2

31-6х=5-20х
20x-6x=5-31
14x=-26
x=-26/14
x=-1.85