问题 解答题 化简5x+3x25t+13t-2t9a-6a-a15x-6x-318a÷3+6b×25a+8b-2b12a÷6-a. 答案 5x+3x=8x; 25t+13t-2t=36t;9a-6a-a=2a;15x-6x-3=9x-3;18a÷3+6b×2=6a+12b;5a+8b-2b=5a+6b.