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5x+2=2x-10 x=-4
5x - 10 = 3x + 2 5x - 3x = 2 + 10 2x = 12 x = 12/2 x = 6
10x2 + 21x - 10 = 10x2 + 25x - 4x - 10 = 5x(2x + 5) - 2(2x + 5) = (2x + 5)(5x -2)
2x +1 = 5x-2 2x +3= 5x 3 = 3x x=1
x+2x+14=5x+214-2=5x+2x+x10=8x10/8=xx=5/4 ans.