Question

решите уравнение: 3,5х+2,5=1,5х-10
                                 26х-0,8=7
                                 17,5x-0,5=34,5
                                  5x-15=0

Answer 1

5х-15=0
5х=15
х=3

17.5х-0.5=34.5
17.5х=35
х=2

26х-0.8=7
26х=7.8
х=0.3


3.5х+2.5=1.5х-10
2х=7.5
х=3.75