Question 306781
A 1 in front of the number is the same as adding 100,000 to the number.
A 1 behind the number is the same as multiplying the number by 10 and then adding 1.
So the equation is: {{{3*(100000 + X) = (X*10) + 1}}}
Simplify the equation
{{{300000 + 3X = 10X + 1}}} Subtract 1 from both sides
{{{299999 + 3X = 10X}}} Subtract 3X from both sides
{{{299999 = 7X}}} Divide both sides by 7
{{{highlight(42857 = X)}}}