решите урав. 10b -5b +44=139
10b -5b +44=139
5b=139-44=95
b=95/5=19
b=19
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Решение:
5b+44=139;
5b=139-44;
5b=95;
b=95÷5;
b=19
Ответ:b=19.
10b -5b +44=139
5b=139-44=95
b=95/5=19
b=19
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