<span>Given :13-4x=1-x Solution : -4x+x=1-13 ( transfer -x to right side and change the sign from - to + ,the number 13 also when we transfer to the left side you must change the sign from + to - ,then add of the the same sign the different sign minus the bigger number will carry the sign) -3x=-12 -3x/-3 = -12/-3 ( in order to get the x you divide the same number and sign both sides) X = 4 answer</span>
