Ответ:
2/3а+3-2,5b+2
2/3a-2,5b+5
2/3×4,25-2,5×0,16= 2 5/6- 0,4= 2 13/30
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Ответ:
2/3а+3-2,5b+2
2/3a-2,5b+5
2/3×4,25-2,5×0,16= 2 5/6- 0,4= 2 13/30