Question

7х-3 - 9-4х=7-х
  2       3      2

Answer 1

3,5х-3-9-4*х/3-7+х/2=0
3,5х-12-4*х/3-7+х/2=0
3,5х-12-4/3х-7+х/2=0
13/6х-12-7+х/2=0
13/6х-19+х/2=0
8/3х-19=0
х=7,125