Question

3(2x+5)=2(3x+5)

6(x-2)=3(x+1)

9(2y-4)=6(y+2)

3(y+1)=2(y+6)

Answer 1

6x +15 = 6x + 10
15 - 10 = 6x - 6x
5 = 0x 

6x - 12 = 3x + 3 
6x - 3x = 3 + 12
3x = 15
x = 15/3
x = 5

18y-36 = 6y+12
18y-6y = 12+36
12y = 50
y = 50/12
y= 25/6

3y+3 = 2y+12
3y-2y = 12-3
y = 9