1) 8y – 6 =5x + 92) x+5=10 3) 3y + 1 = y+7 help me please

1. 8y-6=5x+9
0=5x+9-8y+6
5x-8y+15=0

2. x+5=10
x=10-5
x=5 atau x-5=0

3. 3y+1=y+7
3y-y=7-1
2y=6
y=3 atau y-3=0

1) 8y – 5x = 9 + 6
    8y – 5x = 15

2) x = 10 – 5
    x = 5

3) 3y – y = 7 – 1
    2y = 6
    y = 6/2
    y = 3