Answer:
a) add x , subtract 1 and divide by 4
The solution of given equation 
<u>Step-by-step explanation:</u>
Given equation  1+3 x  = -x +4
                 <em>  Add 'x' on both sides , we get</em>
                      1 + 3 x + x = - x + x +4
                      1 + 4 x  = 4
       <em>  Subtract '1' on both sides , we get</em>
<em>                     1+4 x -1 = 4 -1</em>
                          4 x = 3
<em>       Dividing '4' on both sides, we get</em>
                           
                           
<u><em>Final answer</em></u>:-
<em>The solution of given equation </em> <em></em>
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