Answer:
a) add x , subtract 1 and divide by 4
The solution of given equation 

Explanation:
Given equation 1+3 x = -x +4
  Add 'x' on both sides , we get
 1 + 3 x + x = - x + x +4
 1 + 4 x = 4
  Subtract '1' on both sides , we get
 1+4 x -1 = 4 -1
 4 x = 3
 Dividing '4' on both sides, we get
 

 

Final answer:-
The solution of given equation 
