IF YOU CAN HELP I WILL BE SO HAPPY! I WILL GIVE YOU 5 STARS AND A HEART ON YOU ANSWER PLEASE HELP ME.

Me what is the value of x? showing work would be appreciated - ! : )

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9