Раскройте скобки a - ( b + c)+(d - c - f)
a - ( - b - c) - d + (c + f)
a - ( - b + c) - (d + c - f)
a - ( - b + c) - (d + c - f)
a - ( - b - c) - d + (c + f)
a - ( - b + c) - (d + c - f)
a - ( - b + c) - (d + c - f)
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2.a+b+c-d+c+f
3.a+b-c-d-c+c
4.a+b-c-d-c+f