Question

Rozwiąż rownania:

a)1/2 x-4+x-6

b_x-5=1/3x+1

c)x/4-1/4=2

d)x/5-3=x+1/3

e)5/6(x-1)=4

dam naj <3

dzięki.

Answer 1

a)1/2 x-4=x-6

0.5x-x=-6+4

-0.5x=-2/(-0.5)

x=4

b_x-5=1/3x+1

x-1/3x=1+5

-2/3x=6:(-2.3

x=6:2/3

x=6*3/2

x=18/2

x=9

c)x/4-1/4=2*4

4x/4-4/4=8

x-1=8

x=8+1

x=9

 

d)x/5-3=x+1/3*5

5x/5-15=5x+5/3

x-15=5x+5/3

x-5x=15+5/3

-4x=16 2/3

-4x=50/3/(-4)

x=50/3:(-4)

x=50/3*1/4

x=50/12

x=4 2/12

x=4 1/6

 

e)5/6(x-1)=4

5/6x+5/6=4

5/6x=4-5/6

5/6x= 3 1/6

5/6x=19/6:5/6

x=19/6*6/5

x=19/5

x=3 4/5

x=3.8

x=

 

 

Answer 2

a) źle chyba przepisane-nie ma znaku równości

b)-x-5=1/3x+1

-x-1/3x=1+5

-1 1/3x=6 |:(-1 1/3)

x=6*3/4

x=18/4

x=4 2/4

x=4 1/2

c)

x/4-1/4=2 |*4

x-1=8

x=8+1

x=9

d)x/5-3=x+1/3|*5

x-15=5x+5/3

x-5x=5/3+15

-4x=16 2/3 |:(-4)

x=50/3*(-1/4)

x=-50/12

x=-4 1/6

e)

5/6(x-1)=4

5/6x-5/6=4

5/6x=4+5/6

5/6x=4 5/6 |:5/6

x=29/6*6/5

x=29/5

x=5 4/5