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2017элита
@2017элита
June 2021
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Ребят пожалуйста с кардинатай и чтобы было ширихи и всё и что к чему принадлиж че номер 1039
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tamarabernukho
1)2(3x+1)-x<=3(x+4)
6x+2-x≤3x+12
5x-3x≤12-2
2x≤10
x≤5
\\\\\\\\\\\\\\\\\\\\
-----------------[5]--------
2)7x+4(x-2)>6(1+3x)
7x+4x-8>6+18x
11x-18x>6+8
-7x>14
x<-2
\\\\\\\\\\\\\\\\\\\\\
-------------------(-2)--------
3) 2(x-1)-3(x+2)>6(1+3x)
2x-2-3x-6<6+6x
-x-6x<6+8
-7x<14
x>-2
//////////
-----(-2)-------
4) 7(y+3)-2(y+2)>=2(5y+1)
7y+21-2y-4≥10y+2
5y-10y≥2-17
-5y≥-15
y≤3
\\\\\\\\\\\\\\
-----------[3]--------
5) 6(3+5y)-(2+y)<=5(4+3y)
18+30y-2-7y≤20+5y
23y-15y≤20-16
8y≤4
y≤0,5
\\\\\\\\\\\\\\\\\\\\\\\
-----------------[0.5]---------
6) 4(3y-1)-3(y-1)>2(3+y)
12y-4-3y+3>6+2y
9y-2y>6+1
7y>7
y>1
//////////
-------1---------
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Answers & Comments
6x+2-x≤3x+12
5x-3x≤12-2
2x≤10
x≤5
\\\\\\\\\\\\\\\\\\\\
-----------------[5]--------
2)7x+4(x-2)>6(1+3x)
7x+4x-8>6+18x
11x-18x>6+8
-7x>14
x<-2
\\\\\\\\\\\\\\\\\\\\\
-------------------(-2)--------
3) 2(x-1)-3(x+2)>6(1+3x)
2x-2-3x-6<6+6x
-x-6x<6+8
-7x<14
x>-2
//////////
-----(-2)-------
4) 7(y+3)-2(y+2)>=2(5y+1)
7y+21-2y-4≥10y+2
5y-10y≥2-17
-5y≥-15
y≤3
\\\\\\\\\\\\\\
-----------[3]--------
5) 6(3+5y)-(2+y)<=5(4+3y)
18+30y-2-7y≤20+5y
23y-15y≤20-16
8y≤4
y≤0,5
\\\\\\\\\\\\\\\\\\\\\\\
-----------------[0.5]---------
6) 4(3y-1)-3(y-1)>2(3+y)
12y-4-3y+3>6+2y
9y-2y>6+1
7y>7
y>1
//////////
-------1---------