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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: a) 2³ x 17- 2³ x 14 + 27³ : 9^4 + 15

Toán Lớp 6: a) 2³ x 17- 2³ x 14 + 27³ : 9^4 + 15

Comments ( 2 )

  1. $2^3$. 17 – $2^3$. 14 + $27^3$ : $9^4$ + 15
    = 8. 17 – 8. 14 + $3^9$ : $3^8$ + 15
    = 8. ( 17 – 14 ) + 3 + 15
    = 8. 3 + 3 + 15
    = 24 + 3 + 15
    = 27 + 15
    = 42
     

  2. Answer
    2^{3} xx 17 – 2^{3} xx 14 + 27^{3} : 9^{4} + 15
    = 2^{3} xx (17 – 14) + (3^{3})^{3} : (3^{2})^{4} + 15
    = 8 xx 3 + 3^{9} : 3^{8} + 15
    = 24 + 3 + 15
    = 27 + 15
    = 42

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222-9+11+12:2*14+14 = ? ( )