If you can answer them all I will give you brainliest, but any help on any of them would be appreciated!
1) 2x + 7 = x + 9
x = ?
2) x + 10 + 5 = 2x + 7
x = ?
3) 2x + 3 = x + 7
x = ?
4) 3x + 1 = x + 19
x = ?
5) x + 1 + x = x + 9
x = ?
6) 2x + 5 = 3x + 2
x = ?
7) x + 21 = 4x + 3