multiply both sides by the lcd then you would take the letter as in x and multiply it by the answer you got and subtract the second answer, then divide both sides by the answer that would be like 3x...
I guess you mean simultaneous equations. There are three methods of solving these equations: graphing if the variables are x and y (though this is only an approximate method and should be avoided...
Two step equations are really simple these are the steps... EX. 7x+2=23 do the opposite operation so u subtract 2 from both sides7x=21now since 7x is multiplying , you do the opposite and you divide...