Question 98673
49X^2+9=42X
49X^2-42X+9=0
USING THE QUADRATIC EQUATION {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} WE GET:
X=(42+-SQRT[42^2-4*49+9])/2*49
X=(42+-SQRT[1764-1764])/98
X=42/98
X=.42857 ANSWER.