Question

rozwiąż równania:

a) 3x-5 = 4+2x

b)-5x+10=-2x-8

c)-5x-17=9x+3

d)3 (x-4) -4 (2x-7)=2(x=+5)

e) 3 (3-x) + 2x = 8-2 (x-1)

Potrzebuje na dzisiaj!!!

Answer 1

a) 3x-5 = 4+2x

x=9

b)-5x+10=-2x-8

-3x=-18

x=6

c)-5x-17=9x+3

-14x=20

x=-20/14

x=-10/7

d)3 (x-4) -4 (2x-7)=2(x+5)

3x-12-8x+28=2x+10

-5x+16=2x+10

-7x=-6

x=6/7

e) 3 (3-x) + 2x = 8-2 (x-1)

9-3x+2x=8-2x+8

9-x=16-2x

x=7

 

Answer 2

3x-5 = 4+2x

3x-2x=4+5

x=1

 

b)-5x+10=-2x-8

-5x-2x=-8-10

-7x=-8

x=1,7

 

c)-5x-17=9x+3

-5x-9x=3+17

-14x=20

x=-1,6

 

d)3 (x-4) -4 (2x-7)=2(x=+5)

3x-12-8x-28=2x+10

3x-8x-2x=10+12+28

-13x=50

x=-3,11

 

 

e) 3 (3-x) + 2x = 8-2 (x-1)

9-3x+2x=8-2x-2

-3x+2x+2x=8-2-9

3x=-3

x=-1