(4-3.5*(2 1/7-1 1/5):0.16= ------------------------ х

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(4-3.5*(2 1/7-1 1/5):0.16=
------------------------
х

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пожалуйста

Answer 1

-4(3,5х-4)-(7-2,1х)+5(0,3х-5) = -14x +16 - 7 + 2,1x + 1,5x - 25 = 10,4x - 16 
10,4x-16=¹⁰⁴/₁₀ × (-¹⁰/₂₇)-16 = -¹⁰⁴ˣ¹⁰/₁₀ₓ₂₇ -16 = -¹⁰⁴/₂₇ -16 = -3²³/₂₇-16 = -19²³/₂₇