0.25 x 3x is 0.75x.
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3x2 + x = x*(3x + 1)
3x/(5-x)/3=4 3x/(5-x)=4X3 3x=12(5-x) 3x=60-12x 3x+12x=60 x=4
(x^2-2) (x^2+3x+5)= x^2(x^2+3x+5) -2(x^2+3x+5)= x^4 +3x^3 +5x^2 -2x^2 -6x -10= x^4 +3x^3 +3x^2 -6x -10
x-2=3x+1 x=3x+1+2 x-3x=3 -2x=3 x=-3/2
If: 3x = 48 Then: x = 16