А)5/7x + 9/7x=32 б) 3/4y+5/6y-7/12y =3 Помогите(

Question

А)5/7x + 9/7x=32 б) 3/4y+5/6y-7/12y =3 Помогите(

Answer 1

5/7x + 9/7x = 32 
14/7x = 32 
2x = 32 
x = 16 
-------------------------
3/4y + 5/6y - 7/12y = 3 
9/12y + 10/12y - 7/12y = 36/12 
9y + 10y - 7y = 36 
12y = 36 
y = 3

Answer 2

Б) 3/4y+5/6y-7/12y=3
9+10-7/12y=3
12/12y=3
1y=3
y=3:1
y=3