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турабаева
@турабаева
July 2022
2
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решите уравнения:а)(259-(45+x))-16=123;б)(29+(59-y)+15)=72
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MeBloger
A) ответ:75
b) ответ:31
3 votes
Thanks 4
vmaluga2011
(259-(45+х))-16=123
259-45-х-16=123
259-45-16-123=х
х=75
Проверка:
(259-(45+75))-16=123
259-120-16=123
123=123
(29+(59-у)+15)=72
29+59-у+15=72
29+59+15-72=у
у=31
Проверка:
(29+(59-31)+15)=72
29+28+15=72
72=72
6 votes
Thanks 4
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Answers & Comments
b) ответ:31
259-45-х-16=123
259-45-16-123=х
х=75
Проверка:
(259-(45+75))-16=123
259-120-16=123
123=123
(29+(59-у)+15)=72
29+59-у+15=72
29+59+15-72=у
у=31
Проверка:
(29+(59-31)+15)=72
29+28+15=72
72=72