The Red marble has a 6/10 (60%) chance of gettinv picked while the blue marbles have a 4/10 (40%) chance of getting picked.
It will be 154/100. That is 1.54 meters
Are you trying to simplify the equation? if so, combine the like terms on each side first. -3x + 3 = -2 + 2x. Then simplify, -5x = -5. And solve, x = 1