ПОМОГИТЕ ПОЖАЛУЙСТА
Решите уравнение
1) 3х+0,8/9,6=4,8/3,6
2) 5х+3/9=27/13,5
3) 8/20=28/9х+7

1)3х+0,8/96=4,8/3,63х+8/96=48/363х+1/12=4/33х=4/3-1/123х=16/12-1/123х=15/123х=5/4х=5/4/3=5/122) 5х+3/9=27/13,55х=2-1/3  5х=6/3-1/3    5х=5/3х=5/3/5х=1/33) 8/20=28/9х+72/5-7=28/9х2/5-35/5=28/9х-33/5=28/9х9х=28/(-33/5)9х=-28*5/339х=-140/33х=-140/297