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vikusya222
@vikusya222
August 2022
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x-3y=4
5x+3y=-1
помогите срочно
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ShirokovP
Verified answer
Метод алгебраического сложения:
x + 5x = 4 - 1
6x = 3
x = 3/6 = 1/2 = 0,5
y = ( - 1 - 5x)/3 = ( - 1 - 2,5)/3 = - 3,5/3 = - 7/6
11 votes
Thanks 10
tamarabernukho
X-3y=4
5x+3y=-1
x=3y+4
5(3y+4)+3y=-1
15y+20+3y+1=0
18y+21=0
y=-21/18=-7/6=-1 1/6
x=3*(-7/6)+4= 1/2
9 votes
Thanks 7
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Answers & Comments
Verified answer
Метод алгебраического сложения:x + 5x = 4 - 1
6x = 3
x = 3/6 = 1/2 = 0,5
y = ( - 1 - 5x)/3 = ( - 1 - 2,5)/3 = - 3,5/3 = - 7/6
5x+3y=-1
x=3y+4
5(3y+4)+3y=-1
15y+20+3y+1=0
18y+21=0
y=-21/18=-7/6=-1 1/6
x=3*(-7/6)+4= 1/2