Раскройте скобки и найдите значение выражения
1) -1.6(2а - 7) при а = 6

2)-0.4(3в + 4) при в=7

3)-2/3(3/4 - 1.5с) при с=-3.5

4) (8д - 5) * (-0.6) д=5

5)0.9(-8-3х) при х=4

6)-1/4(4/5у + 9) при у=3 3/4
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