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sugakookies1
18.11.2020 •
Mathematics
Solve the system of equations.
2.5y + 3x = 27
5x – 2.5y = 5
What equation is the result of adding the two equations?
What is the solution to the system?
Solved
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Ответ:
If you put them together, +2.5y and -2.5y neutralize themselves while 5x and 3x become 8x.
2.5y + 3x = 27
5x – 2.5y = 5
8x = 32
x = 4
2.5y + 3x4 = 27
2.5y + 12 = 27
2.5y = 27-12
2.5y = 15
y = 15/2.5
y = 6
X = 4
Y = 6
Ответ:
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