- 3x - X
same as
- 3x + (- X)
= - 4X
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1) 3x-17=0 3x=17 x=17/3 2) 3x-25=0 3x=25 x=25/3
x2/(3x2 - 5x - 2) - [2x/ (3x + 1)][1/(x - 2)] = x2/(3x2 - 6x + x - 2) - 2x/(3x + 1)(x - 2) = x2/[3x(x - 2) + (x - 2)] - 2x/(3x + 1)(x - 2) = x2/(3x + 1)(x - 2) - 2x/(3x + 1)(x - 2) = (x2 - 2x)/(3x + 1)(x - 2) = x(x - 2)/(3x + 1)(x - 2) = x/(3x + 1)
-31
3x+12 = 18 3x = 18-12 3x = 6 x = 2
3x = (96-75) 3x = 21So X = 7