Question

2. Упростите выражение:
а) —4m - (2m – 3) + (m– 1,5);
б) 6m - (2m +3/5)+(4m-11/20)
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Answer 1

а) -4m - (2m - 3) + (m - 1,5) = -4m - 2m + 3 + m - 1,5 = -5m + 1,5;
б) 6m - (2m + 3/5) + (4m - 11/20) = 6m - 2m - 3/5 + 4m - 11/20 = 8m - 12/20 - 11/20 = 8m - 23/20 = 8m - 1 3/20