7x = 3 x = 3/7
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3x2 - 10x - 8 = (3x + 2) (x - 4)
3x - 2y + 7x + 4y = 3x + 7x - 2y +4y = (3+7)x + (-2+4)y = 10x + 2y
3x+4=10 To solve: 3x+4=10 3x=6 x=2
X + 4 is a factor of x^3 + 3x^2 - 10x - 24 along with (x + 2) and (x - 3)
3x-4=5x+6 gives: 2x=-10 which gives x=-5