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genya553654
@genya553654
July 2022
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НАЙДИТЕ КОРЕНЬ УРАВНЕНИЙ
а)0,7х-3*(2х+4)=-1,4 б)y-(3y+4)-7=y в)4х-3 1/4=3/4х+3 1/2 г)1/7*(х-14)-(х-1)=1/7*(х+2) д)а-5/8а-3=1/4а е)2х+4-5/8*(х+4)=3/8*(х+1)
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гюйс
Verified answer
0,7х -3(2х+4)= -1,4
0,7х-6х-12= -1,4
- 5,3х=12-1,4
-5,3х=10,6
х= - 10,6 :5,3
х= - 2
у -(3у+4)-7=у
у-3у-4-7=у
- 2у-у=11
-3у=11
у= - 11:3
у= - 3 2/3
4х -3 1/4=3/4 х+3 1/2
4х - 3/4 х=3 1/2+3 1/4
3 1/4 х=3 2/4+3 1/4
3 1/4 х=6 3/4
х=6 3/4 :3 1/4
х=27/4 * 4/13
х=27/13=2 1/13
1/7 *(х -14)-(х-1)=1/7(х+2)
1/7 х - 2 - х+1=1/7 х+2/7
1/7 х-1/7 х-х=2/7+1
- х=1 2/7
х= - 1 2/7
а - 5/8 а -3=1/4 а
а - 5/8 а - 2/8 а=3
1/8 а=3
а=3 :1/8
а=3*8
а=24
2х +4 -5/8*(х+4)=3/8*(х+1)
2х+4 -5/8 х - 5/2=3/8 х+3/8
2х -5/8 х -3/8 х=3/8+5/8+2 1/2
2х - х=1+2 1/2
х=3 1/2
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Answers & Comments
Verified answer
0,7х -3(2х+4)= -1,40,7х-6х-12= -1,4
- 5,3х=12-1,4
-5,3х=10,6
х= - 10,6 :5,3
х= - 2
у -(3у+4)-7=у
у-3у-4-7=у
- 2у-у=11
-3у=11
у= - 11:3
у= - 3 2/3
4х -3 1/4=3/4 х+3 1/2
4х - 3/4 х=3 1/2+3 1/4
3 1/4 х=3 2/4+3 1/4
3 1/4 х=6 3/4
х=6 3/4 :3 1/4
х=27/4 * 4/13
х=27/13=2 1/13
1/7 *(х -14)-(х-1)=1/7(х+2)
1/7 х - 2 - х+1=1/7 х+2/7
1/7 х-1/7 х-х=2/7+1
- х=1 2/7
х= - 1 2/7
а - 5/8 а -3=1/4 а
а - 5/8 а - 2/8 а=3
1/8 а=3
а=3 :1/8
а=3*8
а=24
2х +4 -5/8*(х+4)=3/8*(х+1)
2х+4 -5/8 х - 5/2=3/8 х+3/8
2х -5/8 х -3/8 х=3/8+5/8+2 1/2
2х - х=1+2 1/2
х=3 1/2