超多數學功課問題？？？？？？？(20分)

我直接俾step

31.=2w+9

32.=(2w+w+w)+(8+4)
=4w+12

33.=(2w+2w+2w)+(1+2+3)
=6w+6

34.=(5w+3w+2w)+(7+1+3)
=10w+11

35.=(3w+4w+5w)+(2y+y)+5
=12w+3y+5

36.=(4y+2y)+(2x+3x)+(3w+5w)(請問你呢題到底有冇+號?因為冇左+號係超級麻煩的)
=6y+5x+8w

37.=(6x+3x)+(3y+5y)+(8w+w)
=9x+8y+9w

38.=(3y+4y)+(2w+3w+5w)+3x+(1+7+4)
=7y+5w+3x+12

39.=(4w+3w)+(4x+8x+5x)+(5y+6y)+(5+4)
=7w+17x+11y+9

40.=(6x+x)+(9y+5y+8y)+(-2w+2w)+3
=7x+22y+3


希望幫到你!!^^

2007-10-22 19:52:12 補充：
對唔住!!第38條應該係7y+10w+3x+12

31. (w+7)+(w+2)
=w+w+7+2
=2w+9

32. (2w+8)+w+(4+w)
=2w+w+w+4+8
=4w+12

33. (2w+1)+(2w+2)+(2w+3)
=2w+2w+2w+1+2+3
=6w+6

34. (5w+7)+(3w+1)+(2w+3)
=5w+3w+2w+7+1+3
=10w+11

35. (3w+2y)+(4w+5)+(5w+y)
=3w+4w+5w+y+2y+5
=12w+y+5

36. (4y+2x)(2y+3w)(5w+3x)
=4y+2y+2x+3x+3w+5w
=6y+5x+8w

37. (6x+3y)+(8w+3x)+(w+5y)
=6x+3x+3y+5y+8w+w
=9x+8y+9w

38. (3y+2w+1)+(3w+3x+7)+(4y+5w+4)
=3y+4y+2w+3w+5w+3x+1+4
=7y+10w+3x+5

39. (4w+4x+5y)+(8x+3w+5)+(6y+5x+4)
=4w+3w+4x+3x+5x+5y+5+4
=7w+12x+5y+9

40. (6x+9y-2w)+(3+5y+2w)+(x+8y)
= 6x+x+9y+5y+8y+2w-2w+3
=7x+22y+3

2007-10-22 19:39:19 補充：
唔好copy

2007-10-22 19:50:21 補充：
36.(4y+2x)+(2y+3w)+(5w+3x) =4y+2y+2x+3x+3w+5w =6y+5x+8w