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2x = 19 - 5
2x = 14
x = 14/2
x = 7
------------------------------------
3x - 4 = 20
3x = 20 + 4
3x = 24
x = 24/3
x = 8
-----------------------------------------
5x - 3 = 3x + 7
5x - 3x = 7 + 3
2x = 10
x = 10/2
x = 5
-------------------------------------------
4x + 9 + x = 24
5x + 9 = 24
5x = 24 - 9
5x = 15
x = 15/5
x = 3
-----------------------------------------
9 + 7x - 3 - 4x = 27
6 + 3x = 27
3x = 27 - 6
3x = 21
x = 21/3
x = 7
2x=19-5 3x=20+4 5x-3x=7+3 5x=24-9 3x=27-9+3
2x=14 3x=24 2x=10 5x=15 3x=21
x=7 x=8 x=5 x=3 x=7