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1439tanap2en21
@1439tanap2en21
July 2022
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Допоможть !!!!!!!!!!!!!!!!!!!!!!!!!!!!!тільки 6 завдання???????????
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Regent1828
Verified answer
A - число десятков исходного числа
b - число единиц.
{ 2a - b = 8
{ (10a + b) - (10b + a) = 27
{ b = 2a - 8
{ 10a + (2a - 8) - 10(2a - 8) - a = 27
10a + 2a - 8 - 20a + 80 - a = 27
-9a = 27 - 72
-9a = -45
a = 5 b = 2*5 - 8 = 2
2*5 - 2 = 8
52 - 25 = 27
Ответ: 52.
2 votes
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Answers & Comments
Verified answer
A - число десятков исходного числаb - число единиц.
{ 2a - b = 8
{ (10a + b) - (10b + a) = 27
{ b = 2a - 8
{ 10a + (2a - 8) - 10(2a - 8) - a = 27
10a + 2a - 8 - 20a + 80 - a = 27
-9a = 27 - 72
-9a = -45
a = 5 b = 2*5 - 8 = 2
2*5 - 2 = 8
52 - 25 = 27
Ответ: 52.