.
Marek, Sylvie and Loic are playing a board game. Sylvie is 12 points more than Marek. Loïc has double Sylvie's points.
Together, they have accumulated 216 points. How many points have each accumulated?
~~~~~~~~~~~~~~~~
Marek + Sylvie + Loic = 216
x + (x+12) + 2*(x+12) = 216
Solve using basic algebra approach.