Question

请问一下这几道脱式计算的题目怎么做？÷ ×

请问一下这几道脱式计算的题目怎么做？要写过程，不要直接在后面些等于！！
1.[76+(2/3+6/5)×15/17]÷4/9
2.[(0.2×1/3)×4.5]÷(83/20-6.55)
还有一道文字题
1.5乘三分之一的积比1.5除以五分之一的商少多少？

Answer 1

[76+(2/3+6/5)×15/17]÷4/9 =[76+(2/3+6/5)×15/17]×9/4 =[76+(10+18)/15×15/17]×9/4 =[76+28/15×15/17]×9/4 =[76+28/17]×9/4 =76×9/4+28/17×9/4 =19×9+63/17 =171+63/17 =171+3+12/17 =174又12/17 [(0.2×1/3)×4.5]÷(83/20-6.55) =[(1/5×1/3)×9/2]÷(4+3/20-6-11/20) =[1/15×9/2]÷(-2-2/5) =3/10÷(-7/5) =-3/10×5/7 =-3/14 1.5乘三分之一的积比1.5除以五分之一的商少多少 1.5/（1/5）-1.5*1/3 =3/2/（1/5）-3/2*1/3 =3/2*5-3/2*1/3 =15/2-1/2 =14/2 =7

Answer 2

[76+(2/3+6/5)×15/17]÷4/9
=[76+(2/3+6/5)×15/17]×9/4
=[76+(10+18)/15×15/17]×9/4
=[76+28/15×15/17]×9/4
=[76+28/17]×9/4
=76×9/4+28/17×9/4
=19×9+63/17
=171+63/17
=171+3+12/17
=174又12/17

[(0.2×1/3)×4.5]÷(83/20-6.55)
=[(1/5×1/3)×9/2]÷(4+3/20-6-11/20)
=[1/15×9/2]÷(-2-2/5)
=3/10÷(-7/5)
=-3/10×5/7
=-3/14

1.5乘三分之一的积比1.5除以五分之一的商少多少

1.5/（1/5）-1.5*1/3
=3/2/（1/5）-3/2*1/3
=3/2*5-3/2*1/3
=15/2-1/2
=14/2
=7

Answer 3

[76+(2/3+6/5)×15/17]÷4/9
解：原式=[76+(2/3+6/5)×15/17]×9/4
=[76+(10+18)/15×15/17]×9/4
=[76+28/15×15/17]×9/4
=[76+28/17]×9/4
=76×9/4+28/17×9/4
=19×9+63/17
=171+63/17
=171+3+12/17

[(0.2×1/3)×4.5]÷(83/20-6.55)
=[(1/5×1/3)×9/2]÷(4+3/20-6-11/20)
=[1/15×9/2]÷(-2-2/5)
=3/10÷(-7/5)
=-3/10×5/7
=-3/14

1.5乘三分之一的积比1.5除以五分之一的商少多少

1.5/（1/5）-1.5*1/3
=3/2/（1/5）-3/2*1/3
=3/2*5-3/2*1/3
=15/2-1/2
=14/2
=7

Answer 4

76+(2/3+6/5)×15/17]÷4/9
=[76+(2/3+6/5)×15/17]×9/4
=[76+(10+18)/15×15/17]×9/4
=[76+28/15×15/17]×9/4
=[76+28/17]×9/4
=76×9/4+28/17×9/4
=19×9+63/17
=171+63/17
=171+3+12/17
=174又12/17

[(0.2×1/3)×4.5]÷(83/20-6.55)
=[(1/5×1/3)×9/2]÷(4+3/20-6-11/20)
=[1/15×9/2]÷(-2-2/5)
=3/10÷(-7/5)
=-3/10×5/7
=-3/14

1.5乘三分之一的积比1.5除以五分之一的商少多少

1.5/（1/5）-1.5*1/3
=3/2/（1/5）-3/2*1/3
=3/2*5-3/2*1/3
=15/2-1/2
=14/2
=7