Respuesta :
You can use the arcane mathematical process known as "checking".
-- Take a number, any number.
-- Write the number you chose in place of 'x' in the equation.
-- If the equation is then true, then the number you chose
   is the solution.  If not, then it's not.
            4 x + 1 = 22 + x
Try 2:Â Â Â Â Â Â Â 4(2) +Â 1Â =Â 22Â + (2)
             8  + 1 = 22 + 2
                9   =   24    <== I don't think so.
                                 2 is not the solution.
Try 8:Â Â Â Â Â Â Â 4(8)Â +Â 1Â =Â 22Â + (8)
            32   + 1 = 22 + 8
                33   =    30    <== I don't think so.
                                  8 is not the solution.  Â
Try 7:Â Â Â Â Â Â Â 4(7)Â +Â 1Â =Â 22Â + (7)
             28  + 1 = 22 + 7
                29   =    29    <== Yay !
                                  7 is the solution !Â