1. 12-2x=4
-2x = -8
x = 4
2. 30-5x=15
-5x=-15
x=3
3. 4x+2x=60
6x = 60
x=10
4. 4x+10+2x = 60
6x = 50
x = 8 1/3
5. 9x-6x=60
3x=60
x=20
6. 9x-20-6x=90
3x=110
x = 36 2/3
1. 12-2x=4
-2x = -8
x = 4
2. 30-5x=15
-5x=-15
x=3
3. 4x+2x=60
6x = 60
x=10
4. 4x+10+2x = 60
6x = 50
x = 8 1/3
5. 9x-6x=60
3x=60
x=20
6. 9x-20-6x=90
3x=110
x = 36 2/3