将下列题目化简6a+13a 6x－28－2.5x+30.5 8a－(5a+8) (5x+7)－(4x+0.18)

将下列题目化简6a+13a 6x－28－2.5x+30.5 8a－(5a+8) (5x+7)－(4x+0.18)
将下列题目化简
6a+13a 6x－28－2.5x+30.5 8a－(5a+8) (5x+7)－(4x+0.18)

将下列题目化简6a+13a 6x－28－2.5x+30.5 8a－(5a+8) (5x+7)－(4x+0.18)
6a+13a=19a
6x-28-2.5x+30.5=6x-2.5x+30.5-28=3.5x+1.5
8a-(5a+8)=8a-5a-8=3a-8
(5x+7)-(4x+0.18)=5x+7-4x-0.18=5x-4x+7-0.18=x+6.82