7 - (24 + х) - 21 = 10, 5 - (45 - у) + 18 = 58, 20 - 56 - (х + 12) = 24, 40 - 55 - (х - 15) = 30, 150 - (х - 87) - 27 = 36, 24 - 87 - (41 + у)= 22,

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