Question

(y+7/5)•3/1=2 9/4 помогите пж

Answer 1

21/7y+5=9/4

63y+45=84

63y=39

y=13/21

Answer 2

(y+5/7)*1/3=2 4/9
y+5/7=22/9:1/3
y+5/7=22/9*3
y+5/7=22/3
y+5/7=71/3
y=7 1/3-5/7
y=7 7/21-15/21
y= 6 13/21