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yulia2905
@yulia2905
July 2022
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розвяжіть систему рівнянь способом підстановки x-2y=14 2x+5y=1
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OliviaSinger
x-2y=14
2x+5y=1
1)x-2y=14
x=14+2y
2)2(14+2y)+5y=1
28+4y+5y=1
9y=-27
y=-3
3) x=14+2*(-3)
x=8
2 votes
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Answers & Comments
2x+5y=1
1)x-2y=14
x=14+2y
2)2(14+2y)+5y=1
28+4y+5y=1
9y=-27
y=-3
3) x=14+2*(-3)
x=8