Предмет: Алгебра, автор: banin

Решить уравнение:

6+(2-4x)+5=3(1-3x)

0,5(2y-1)-(0,5-0,2y)+1=0

0,15(x-4)=9,9-0,3(x-1)

3(3x-1)+2=5(1-2x)1

Ответы

Автор ответа: Clarisse
0

 

1)

6+(2-4х)+5=3(1-3х)

 

6+2-4х+5=3-9х

-4х+9х=3-5-2-6

5х=-10

х=-2

2)

0,5(2у-1)-(0,5-0,2у)+1=0

1у-0,5-0,5+0,2у+1=0

1у-0,2у=0,5+0,5+1

0,8у=2

у=2,5

3)

0,15(х-40=9,9-0,3(х-1)

0,15х-0,6=9,9-0,3х+0,3

0,15х+0,3х=9,9+0,3+0,6

0,45х=10,8

х=2,4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Автор ответа: OlyaKylieva
0

6+2-4x+5=3-9x;   1y-0.5-0.5+0.2y+1=0;     0.15х+0.6=9.9-0.3x+0.3;           9х-3+2=5-10х;

10+5x=0;               1.2y=0;                              0.45х=10.2-0.6;                           19х=6;

5x=-10;                   y=0;                                    0.45х=9.6;                                     х=6/19

x=-2                                                                    х=21.(3)

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