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2x-3=6+x
2x-x=6+3
x=9
2)
4x – 3 = 36 + 25
4x = 36 + 25 + 3
4x = 64
x= 64 : 4
x = 16
3)
3x -1 = 2x + 5
3x-2x = 5+1
x= 6
4)
2x+6 = 20
2x= 14
x=7
5)
4x - 9 = 2x + 3
4x-2x=3+9
2x=12
x=6