6-x+12 = 10x+7
6+12-7 = 10x+x
11 = 11x
x = 1
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-10x+3 = -x+12 -10x+x = 12-3 -9x = 9 x = -1
12 - 3x = 24 - 10x so 7x = 12 making x = 12/7 or one and five-sevenths.
3x + 12 + 10x = 13x + 12
10x-7=4x+5 +7 +7 10x=4x+12 -4x -4x 6x=12 /6 /6 x=2
x2+10x+1 = -12+2x x2+10x-2x+1+12 = 0 x2+8x+13 = 0 Solving by using the quadratic equation formula: x = - 4 - or + the square root of 3