,18/а+23=3/54/7=8+2а/ 215/12=30/ 44+7а1/9=5а-14/ 543/8=21/ 4a+814/45=7a-5/90

Пожалуйста помогите,18/а+23=3/54/7=8+2а/         215/12=30/    44+7а1/9=5а-14/         543/8=21/     4(a+8)14/45=7(a-5)/

90

  • 18/(а+23)=3/5      4/7=(8+2а)/21     5/12=30/(44+7а)     1/9=(5а-14)/54а+23=18:3/5        8+2а=21*4/7       44+7а=30:5/12       5а-14=54*1/9а+23=30              8+2а=12            44+7а=72               5а-14=6а=30-23               2а=12-8             7а=72-44                5а=6+14а=7                     2а=4                  7а=28                    5а=20

                              а=2                     а=4                       а=4

    3/8=21/(4(а+8))        14/45=(7(а-5))/904а+32=21:3/8           7а-35=90*14/454а+32=56                7а-35=284а=56-32                  7а=28+354а=24                      7а=63

    а=6                          а=9