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2x = 16 - 10
2x = 6
x = 6/2
x = 3
10x-8 = 8x
10x - 8x = 8
2x = 8
x = 8/2
x = 4
45x = 180+40x
45x - 40x = 180
5x = 180
x = 180/5
x = 36
9x-1 = 107-3x
9x + 3x = 107 + 1
12x = 108
x = 108/12
x = 9
2x+3 = x-9
2x - x = - 9 - 3
x = - 12
4x-2 = x+10
4x - x = 10 + 2
3x = 12
x = 12/3
x = 4
2x =
2x = 10
x = 10/2
x = 5