Question

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⁷/₁₄ - ½ *(2,7* ⁵/₂₇ - 0,8):(-½)³

(-2⅖)*[(-¾) * ⁸/₉ - ¹/₆ *(-³/₂)]-(-4,8):(-1³/₅)

(-5)²:2,5-[1⅓ *(-½)²+⅖ * √6¼] *0,75

5⅓ - ⅓ * √81 +3⁰ *3³+⅓+(√5 - 3)(√5 + 3)

*-razy

Answer 1

⁷/₁₄ - ½ *(2,7* ⁵/₂₇ - 0,8):(-½)³ = ⁷/₁₄ - ½ *(²⁷/₁₀* ⁵/₂₇ - 0,8):(-⅛) = ⁷/₁₄ - ½ *(0,5-0,8):(-⅛) = ⁷/₁₄ - ½ *(-0,3)*(-8) = 0,5 - 1,2 = 0,7

 

(-2⅖)*[(-¾) * ⁸/₉ - ¹/₆ *(-³/₂)]-(-4,8):(-1³/₅) =(-¹²/₅)*[-⅔+¼]-(-4,8)*(-⅝) = (-¹²/₅)*[-⁸/₁₂+³/₁₂]-(-4,8)*(-0,625) = (-¹²/₅)*[-⁵/₁₂]-3 = 1-3 = -2

 

(-5)²:2,5-[1⅓ *(-½)²+⅖ * √6¼] *0,75 = 25:2,5-[⁴/₃*¼+⅖*⁵/₂]*0,75 = 10-[⅓+1]*0,75 = 10-⁴/₃*¾ = 10-1 = 9

 

5⅓ - ⅓  * √81 +3⁰ *3³+⅓+(√5 - 3)(√5 + 3) = 5⅓-3+1*27+⅓+5-9 = 2⅓+27+⅓-4 = 23+2⅔ = 25⅔