1) (56+а)+14 =56+а+14=70+а
3)805+х+195=1000+х
2)342+(b+58) =342+б+58=400+б
4)m+4563+1837=м+6400
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1) (56+а)+14 =56+а+14=70+а
3)805+х+195=1000+х
2)342+(b+58) =342+б+58=400+б
4)m+4563+1837=м+6400
2) 1000+Х
3) 400+b
4) 6400+m