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ruslanprice
@ruslanprice
July 2022
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Решить систему:
3(y-2x)-(5y+2)=5(1-x)
7-6(x+y)=2(3-2x)+y
Подробно
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andrisd
Verified answer
3(y-2x)-(5y+2)=5(1-x)
7-6(x+y)=2(3-2x)+y
3y-6x-5y-2=5-5x
7-6x-6y=6-4x+y
-2y-6x+5x=5
-6x-6y+4x-y=6-7
-2y-x=5
-2x-7y=-1
-x=5+2y
x=-5-2y
-2(-5-2y)-7y=-1
10+4y-7y=-1
-3y=-1-10
-3y=-11
y=11/3
-2(11/3)-x=5
-22/3-x=5
-x=5+22/3=5+7 1/3
-x=12 1/3
x=-12 1/3
Ответ: х=-12 1/3 у=3 2/3
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Answers & Comments
Verified answer
3(y-2x)-(5y+2)=5(1-x)7-6(x+y)=2(3-2x)+y
3y-6x-5y-2=5-5x
7-6x-6y=6-4x+y
-2y-6x+5x=5
-6x-6y+4x-y=6-7
-2y-x=5
-2x-7y=-1
-x=5+2y
x=-5-2y
-2(-5-2y)-7y=-1
10+4y-7y=-1
-3y=-1-10
-3y=-11
y=11/3
-2(11/3)-x=5
-22/3-x=5
-x=5+22/3=5+7 1/3
-x=12 1/3
x=-12 1/3
Ответ: х=-12 1/3 у=3 2/3