Does "standard form" have fractions? No? Then multiply through to get rid of them.
Does "standard form" have variables on either side of the equation? No? Then rearrange to orient the variable-containing terms correctly.
Does "standard form" have a "minus" sign on the x-containing term? No? Then multiply through by -1, if necessary, to get the right sign.
Does "standard form" have the constant term (the plain number) on the same side as the variable-containing terms? No? Then rearrange, as necessary.
If you get stuck, please reply showing how far you have gotten in working these steps. Thank you.
Eliz.