Question

Rozwiąz układ równań
1/2(x-4)-2(y-3)=11
3(x-1)-1/3(y+6)=2

Answer 1

1/2(x-4)-2(y-3)=11 /*2
3(x-1)-1/3(y+6)=2 /*3
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x-4-4(y-3)=22
9(x-1)-(y+6)=6
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x-4-4y+12=22
9x-9-y-6=6
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x-4y=14
9x-y=21 /*(-4)
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x-4y=14
-36x+4y=-84
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-35x=-70 /:(-35)
x=2
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x-4y=14
2-4y=14
-4y=12 /:(-4)
y=-3
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odp x=2 y=-3