а) -48 * 25 + 28 * 25 = 25 * (-48 + 28) = 25 * (-20) = -500;
б) -138 + 24 - (29 - 138) = -138 + 24 - 29 + 138 = 24 - 29 = -5.
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а) -48 * 25 + 28 * 25 = 25 * (-48 + 28) = 25 * (-20) = -500;
б) -138 + 24 - (29 - 138) = -138 + 24 - 29 + 138 = 24 - 29 = -5.