Ответ:
3) 12х+12у
4) 11с-99
5) 128+16у
6) 60-45
7) 42а+56b
8) 20m-30n+40k
9) 96x+68y-144z
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Answers & Comments
Ответ:
3) 12х+12у
4) 11с-99
5) 128+16у
6) 60-45
7) 42а+56b
8) 20m-30n+40k
9) 96x+68y-144z