rewrite with all x-terms on the left and everything else on the right: (6/5)x - (330/28)x - (9/8)x + (3/2)x = - 5/3 - 33/8
combine the fractions on the left with a common denominator of 280, and on the right with a common denominator of 24: (-336/280 - 3300/280 - 315/280 + 420/280)x = -40/24 - 99/24
combine numerators over the common denominators on both sides: (-3531/280)x = -139/24
multiply both sides by the reciprocal of the left side: x = (-139/24)(-280/3531)