8×8×8x人成免费观视频
@米莎6191：4/5*37.5%+3/8*32 - 0.375的简算 -
濮皆15560053211…… 4/5*37.5%+3/8*32-0.375 =4/5x3/8+3/8x32-3/8 =(4/5-1)x3/8+12 =12-1/5x3/8 =12-3/40 =11又 37/40
@米莎6191：100 - 20x=20 13.5x - 0.31*10=14.45 1.2x*5+1.2x=21.6 8+8*(6.6+x)=78.4 15 - (5.5 - x)*6=2x (8+3)*50 - 6x=100 - 作业帮
濮皆15560053211…… [答案] 100-20x=20 20x=100-20 20x=80 x=4 13.5x-0.31*10=14.45 13.5x-3.1=14.45 13.5x=17.55 x=1.3 1.2x*5+1.2x=21.6 6x+1.2x=21.6 1.8x=21.6 x=12 8+8*(6.6+x)=78.4 8+52.8+8x=78.4 60.8+8x=78.4 8x=17.6 x=2.2 1...
@米莎6191：X*25%+[8X*(1 - 25%)+3]/[8*(1/4+1)+2]+3=X怎么解? -
濮皆15560053211…… X*25%+[8X*(1-25%)+3]/[8*(1/4+1)+2]+3=X0.25x+[(6x+3)/12]+3=x0.25x+0.5x+0.25+3=x x-0.75x=3.250.25x=3.25 x=13
@米莎6191：20÷(3/4 - 2/5) 8*x=25/6÷1/5 7.2*8 - 10x=36 -
濮皆15560053211…… 20÷(3/4-2/5) =20÷(15/20-8/20) =20÷7/20 =400/78*x=25/6÷1/5 8x=125/6 x=125/6÷8 x=125/48 7.2*8-10x=36 10x=57.6-36 10x=21.6 x=2.16
@米莎6191：5/8 - 5/8*4/9怎么简算【[/]表几分之几】请详细解答 -
濮皆15560053211…… 5/8-5/8*4/9 =5/8x(1-4/9) =5/8x5/9 =25/72 很高兴为您解答,祝你学习进步! 有不明白的可以追问!如果您认可我的回答. 请点击下面的【选为满意回答】按钮,谢谢!
@米莎6191：(7/8 - 7/8*4/5)/7/10 -
濮皆15560053211…… (7/8-7/8*4/5)/7/10=7/8x(1-4/5)x10/7=7/8x1/5x10/7=1/4
@米莎6191：5.25÷3÷0.25 (1—八分之一)*234—八分之七*34 0.25*1.25*32简便运算 - 作业帮
濮皆15560053211…… [答案] 5.25÷3÷0.25 =(5.25÷0.25)÷3 =21÷3 =7 (1—八分之一)*234—八分之七*34 =7/8x234-7/8x34 =7/8x(234-34) =7/8x200 =7x25 =175 0.25*1.25*32 =0.25x1.25x4x8 =(0.25x4)x(1.25x8) =1x10 =10 如果本题有什么不明白可以追问,
@米莎6191：9/10x7/8x13/6的积除以13/3x7/16x18/5的积? -
濮皆15560053211…… (9/10x7/8x13/6)÷(13/3x7/16x18/5) =9/10x7/8x13/6x3/13x16/7x5/18 先约分后相乘,约到最后是 =1/4 望采纳,谢谢
濮皆15560053211…… 4/5*37.5%+3/8*32-0.375 =4/5x3/8+3/8x32-3/8 =(4/5-1)x3/8+12 =12-1/5x3/8 =12-3/40 =11又 37/40
@米莎6191：100 - 20x=20 13.5x - 0.31*10=14.45 1.2x*5+1.2x=21.6 8+8*(6.6+x)=78.4 15 - (5.5 - x)*6=2x (8+3)*50 - 6x=100 - 作业帮
濮皆15560053211…… [答案] 100-20x=20 20x=100-20 20x=80 x=4 13.5x-0.31*10=14.45 13.5x-3.1=14.45 13.5x=17.55 x=1.3 1.2x*5+1.2x=21.6 6x+1.2x=21.6 1.8x=21.6 x=12 8+8*(6.6+x)=78.4 8+52.8+8x=78.4 60.8+8x=78.4 8x=17.6 x=2.2 1...
@米莎6191：X*25%+[8X*(1 - 25%)+3]/[8*(1/4+1)+2]+3=X怎么解? -
濮皆15560053211…… X*25%+[8X*(1-25%)+3]/[8*(1/4+1)+2]+3=X0.25x+[(6x+3)/12]+3=x0.25x+0.5x+0.25+3=x x-0.75x=3.250.25x=3.25 x=13
@米莎6191：20÷(3/4 - 2/5) 8*x=25/6÷1/5 7.2*8 - 10x=36 -
濮皆15560053211…… 20÷(3/4-2/5) =20÷(15/20-8/20) =20÷7/20 =400/78*x=25/6÷1/5 8x=125/6 x=125/6÷8 x=125/48 7.2*8-10x=36 10x=57.6-36 10x=21.6 x=2.16
@米莎6191：5/8 - 5/8*4/9怎么简算【[/]表几分之几】请详细解答 -
濮皆15560053211…… 5/8-5/8*4/9 =5/8x(1-4/9) =5/8x5/9 =25/72 很高兴为您解答,祝你学习进步! 有不明白的可以追问!如果您认可我的回答. 请点击下面的【选为满意回答】按钮,谢谢!
@米莎6191：(7/8 - 7/8*4/5)/7/10 -
濮皆15560053211…… (7/8-7/8*4/5)/7/10=7/8x(1-4/5)x10/7=7/8x1/5x10/7=1/4
@米莎6191：5.25÷3÷0.25 (1—八分之一)*234—八分之七*34 0.25*1.25*32简便运算 - 作业帮
濮皆15560053211…… [答案] 5.25÷3÷0.25 =(5.25÷0.25)÷3 =21÷3 =7 (1—八分之一)*234—八分之七*34 =7/8x234-7/8x34 =7/8x(234-34) =7/8x200 =7x25 =175 0.25*1.25*32 =0.25x1.25x4x8 =(0.25x4)x(1.25x8) =1x10 =10 如果本题有什么不明白可以追问,
@米莎6191：9/10x7/8x13/6的积除以13/3x7/16x18/5的积? -
濮皆15560053211…… (9/10x7/8x13/6)÷(13/3x7/16x18/5) =9/10x7/8x13/6x3/13x16/7x5/18 先约分后相乘,约到最后是 =1/4 望采纳,谢谢
