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AlsuMustafina
@AlsuMustafina
July 2022
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способом подстановки найдите решение системы
{ 2y - 15x = 3
{ 5x - y = -1
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Verified answer
{ 2y - 15x = 3
{ 5x - y = -1
{ 2y - 15x = 3
{ y=5x+1
2(5x+1)-15x=3
10x+2-15x=3
-5x=3-2
-5x=1
x=-0,2
y=5(-0,2)+1=-1+1=0
Ответ: (-0,2;0)
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AlsuMustafina
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Answers & Comments
Verified answer
{ 2y - 15x = 3{ 5x - y = -1
{ 2y - 15x = 3
{ y=5x+1
2(5x+1)-15x=3
10x+2-15x=3
-5x=3-2
-5x=1
x=-0,2
y=5(-0,2)+1=-1+1=0
Ответ: (-0,2;0)