Question

Решите уравнение
1) X-5/2=9-x/3
2) 8+x/7=3x-5/6,5
3) 7x+9/2,5=5x-2/6
4) 0,6/x-3=2,1/x+2.

Answer 1

1) x - 5/2 = 9 - x/3     | *3
3x - 15/2 = 27 - x
4x = 27+15/2
4x = 69/2
x = 69/8
x = 8,625