Question

小学数学化简

（2）15（X-8)+12x+2 (3 ) 8(w+5)-5w-7 (4) 5+3b+4b-Y+3Y (5) 17(a-5)-4a+3 (6)12k-11k-0.5+14 (7) 3*4s-23+16s (8 )2h+3*6+7h*2 (9) 24-5v-(10v-5) (10) 6a-7b+3a-3b (11)s/2+56/7+7s (12) 6u-2(4v-3u) (13)8(a-a+10)+10 (14)5m+5m-(5n+5n) (15)14x-3(2x-1) (16) 4x+2y+3x-4y (17)6x-(2x-5)+3 (18)12-2(x+2)+4x

Answer 1

（2）15（X-8)+12x+2 =15x-120+12x+2=27x-118
(3 ) 8(w+5)-5w-7 =8w+40-5w-7=3w+33
(4) 5+3b+4b-Y+3Y =5+7b+2Y
(5) 17(a-5)-4a+3 =17a-85-4a+3=13a-82
(6)12k-11k-0.5+14 =k+13.5
(7) 3*4s-23+16s=12s-23+16s=28s-23
(8 )2h+3*6+7h*2 =2h+18+14h=16h+18
(9) 24-5v-(10v-5) =24-5v-10v+5=29-15v
(10) 6a-7b+3a-3b=9a-10b
(11)s/2+56/7+7s =1/2s+8+7s=7.5s+8
(12) 6u-2(4v-3u) =6u-8v-6u=-8v
(13)8(a-a+10)+10 =80+10=90
(14)5m+5m-(5n+5n) =10m-10n
(15)14x-3(2x-1)=14x-6x+3=8x+3
(16) 4x+2y+3x-4y=7x-2y
(17)6x-(2x-5)+3 =6x-2x+5=4x+5
(18)12-2(x+2)+4x=12-2x-4+4x=8+2x

Answer 2

15（x-8）+12x+2
=15x-120+12x+2
=27x-118
这题不难为什么不自己做

Answer 3

我还是教你方法吧，同类项放一起，按数字加减就行

Answer 4

大哥，有悬赏吗，高的话，我才帮

Answer 5

够懒