9x + 5 = 5x + 17
9x + 5 - 5x = 17
9x - 5x = 4x
5-4x=17
17-5=12
12 divided by 4 = 3
x=3
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4x + 55 = 9x + 10 55 = 5x + 10 45 = 5x x = 9
5x + 51 = 9x + 11 Becomes 40 = 4x So x = 10
9x = 4x + 45 5x = 45x = 9
9 + 5x = -4x + 63 9 + 9x = 63 9x = 54 9x/9 = 54/9 x = 6
2x + 5x - 1 = 9x 7x - 1 = 9x -1 = 9x - 7x -1 = 2x -1/2=x