27.121-87.27+73.34 10²—[60:(5mũ6 :5 mũ4—3.5)] 500—{5.[409—(2³.3—21)]+103.115

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1. `Giải thích các bước giải:`

    27.121-87.27+73.34

   `=27.(121-87)+73.34`

   `=27.34+73.34`

   `=(27+73).34`

   `=100.34`

   `=3400`

   `10²-[60:(5^6 :5^4-3.5)]`

   `=10²-[60:(5²-15)]`

   `=10²-[60:(25-15)]`

   `=10²-[60:10]`

   `=10²-6`

   `=100-6`

   `=94`

   `500-{5.[409-(2³.3-21)]}+103.115`

   `=500-{5.[409-3]}+103.115`

   `=500-{5.406}+103.115`

   `=500-2030+11845`

   `=10315`

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2. a/ 27.121- 87.27 + 73.34

   = `27. ( 121 – 87 ) + 73.34`

   = `27. 34 + 73. 34`

   = `34. ( 27 + 73 )`

   = `34. 100`

   = `3400`

   b/ `10^2 – [60:(5^6:5 ^4- 3.5)]`

   = `10^2 – [60:(5^2- 15)]`

   = `10^2 – [60:(25- 15)]`

   = `10^2 – [60: 10]`

   = `10^2 – 6`

   = `100 – 6`

   = `94`

   c/ `500- {5.[409—(2^3“.3—21)]}+103.115`

   = `500- {5.[409—(8.3—21)]+103.115`

   = `500- {5.[409—( 24—21)]}+103.115`

   = `500- {5.[409—3]}+103.115`

   = `500- {5.406}+103.115`

   = `500- 2030 + 103.115`

   = `(- 1530) + 11845`

   = `10315`

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