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Решение
1) 3*(π/6) - (π/4) + (π/4) + (π/6) = 4π/6 = 2π/3
2) -(π/4) + (π/2) - (π/6) - (π/3) = -3π/12 = -π/4
1) 3*(π/6) - (π/4) + (π/4) + (π/6) = 4π/6 = 2π/3
2) -(π/4) + (π/2) - (π/6) - (π/3) = -3π/12 = -π/4
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