25 БАЛЛОВ

Укажите неверное утверждение

a) 0,5 - (x + 1,3) = 0,5 - x - 1,3
г) (x + y + 4) • 2 = 2x + 2y + 8
д) 0,5 + (x - 1,3) = 0,5 + x - 1,3
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