9/10:3/2+1,5-26%. 10và7/9+-7/5:1và4/5+0,14-36/45. 2và3/7-x=1/5. x-0,34=5/6. -7/2:x=-1và5/9

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1. *Lời giải :

   `1) 9/10 : 3/2 + 1,5 – 26%`

   `= 3/5 + 1,5 – 26%`

   `= 21/10 – 26%`

   `= 46/25`]

   `2) 10 7/9 + (-7)/5 : 1 4/5 + 0,14 – 36/45`

   `= 97/9 + (-7)/5 : 9/4 + 0,14 – 36/45`

   `= 97/9 + (-28)/45 + 0,14 – 36/45`

   `= 457/45 + 0,14 – 36/45`

   `= 4633/450 – 36/45`

   `= 4273/450`

   `3) 2 3/7 – x = 1/5`

   `-> 17/7 – x = 1/5`

   `-> x =78/35`

   `4) x – 0,34 = 5/6`

   `-> x = 5/6 + 0,34`

   `-> x = 88/75`

   `5) -7/2 : x = -1 5/9`

   `-> -7/2 : x = (-14)/9`

   `-> x = 9/4`

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