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Настюша15022000
@Настюша15022000
July 2022
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Помогите решить системы уравнений!!!
1.x+3y=9
3x-9=7
2. 2x+y=7
x-2y=11
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mmb1
Verified answer
1.x+3y=9
3x-9y=7
умнодаем первое на3 и складываем со второы
3x+9y=27
3x+9y+3x-9y=27+9
6x=36
x=6
y=1
2. 2x+y=7
x-2y=11
evyj;ftv jlby yf 2 b crkdlsdftb
4x+2y=14
4x+2y+x-2y=14+11
5x=25
x=5
y=-3
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Answers & Comments
Verified answer
1.x+3y=93x-9y=7
умнодаем первое на3 и складываем со второы
3x+9y=27
3x+9y+3x-9y=27+9
6x=36
x=6
y=1
2. 2x+y=7
x-2y=11
evyj;ftv jlby yf 2 b crkdlsdftb
4x+2y=14
4x+2y+x-2y=14+11
5x=25
x=5
y=-3