Question

rownania

c)

d)

e)

f)

PROSZEEE NA DZISIAJJ

Answer 1

c. 35/2 x -16x = 16

35/2x - 32/2x = 16

3/2x =16 /:3/2

x = 32/3

x = 10 i 2/3

d. 12x -60=40x-144

-28x=-84 / : (-28)

x=3

e. 4/9x - 2 = 5/12x - 1 i 1/3

16/36 x - 15/36 s = 2/3

1/36x=2/3 / : 1/36

x = 24

f.2x-5

------- - x = 102/100 +1 / * 3

3

2x - 5 - 3x = 306/100 + 3

x= -11,06

Answer 2

c)

2,5x-2             8x+0,5

-------    =       -----------   / ·14

2                     7

7(2,5x-2)=2(8x+0,5)

17,5x-14=16x+1

17,5x-16x=1+14

1,5x=15 / : 1,5

x=10

 

d)

x-5      5x-18

----  =   ------  / · 24

8           12

3(x-5)=2(5x-18)

3x-15=10x-36

3x-10x=-36+15

-7x=-21 / : (-7)

x=3

 

e)

⁴/₉x-2=⁵/₁₂x-1⅓  / ·36

16x-72=15x-48

16x-15x=-48+72

x=24

 

f)

2x-5

------  - 1=10,2+x   / ·3

3

2x-5-3=30,6+3x

2x-3x=30,6+3+5

-x=38,6  / : (-1)

x=38,6