12x + 9 = 10x + 1
Subtract 10x from both sides: 2x + 9 = 1
Sutract 9 from both sides: 2x = - 8
Divide both sides by 2: x = -4
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12x-3=2x+17 10x-3=17 10x=20 x=2
5x-3 = 11+12x 5x-12x = 11+3 -7x = 14 x = -2
10x+2x-3y-4y=12x-7y
17
10x - 5y + 2x - 3y = 12x - 8y