2x=8y x=5y-5 решите систему.

Question

2x=8y
x=5y-5
решите систему.

Comments

x=4y

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4y=5y-5

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-y=-5

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y=5

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thx

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not alone.

Answer 1

2(5y-5)=8y
10y-8=10
2y=10
y=5
x=5y-5
x=25-5
x=20