To solve an equation with a rational (fraction) coefficient you need to multiply both sides of the equation by the reciprocal (invert the fraction - flip it).
[tex] \frac{1}{6}x =4[/tex] The reciprocal of 1/6 is 6/1 or 6
[tex]6( \frac{1}{6} x)= 6(4)[/tex] The product of reciprocals equals 1
1x = 24
x = 24
