помогите срочно математику
|a|+2|b|-3|a-b| при a=-8.9 b=-6.2
|-x|+|x|+|-x|+|-x|при x=0.5
|a|+2|b|-3|a-b| при a=-8.9 b=-6.2
|-x|+|x|+|-x|+|-x|при x=0.5
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|a| + 2|b| - 3|a-b| = 8.9 + 12.4 - 3*2.7 = 21.1 - 8.1 = 13