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yanakim127
@yanakim127
July 2022
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помогите решать пожалуйста с 1 и 2 частью систему уравнений
2х+3у=3
5х+6у=9
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Answers & Comments
zerirezzo
{ 2х + 3у = 3 | × (-2);
5х + 6у = 9
{ - 4х - 6у = -6;
5х + 6у = 9
1х = 3
х = 3
{ х = 3,
6у = 9 - 5×3 = 9 - 15 = - 6
{ х = 3,
у = - 6 ÷ 6 = - 1
ОТВЕТ: х = 3, у = - 1
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Answers & Comments
5х + 6у = 9
{ - 4х - 6у = -6;
5х + 6у = 9
1х = 3
х = 3
{ х = 3,
6у = 9 - 5×3 = 9 - 15 = - 6
{ х = 3,
у = - 6 ÷ 6 = - 1
ОТВЕТ: х = 3, у = - 1