Question

rozwiąż równania.

a) 2 (x - 1/2)-x+3=3

b)0=-(2x+1)

c) 12y- (y-5)=10y -1

d) 2(u-5) +15=3 (u-4) +10

bd naj !

Answer 1

a) 2x-1-x+3=3

2x-x=3+1-3

x=1

 

b) 0=-2x-1

2x=-1-0

2x=-1

x=-0,5

 

c) 12y-y+5=10y-1

12y-y-10y=-1-6

y=-7

 

d) 2u-10+15=3u-12+10

2u-3u=-12+10+10-15

-u=-7

u=7

 

Proszę!

Answer 2

a) 2(x-1/2)-x+3=3

2x-1-x+3=3

x=3+1-3

x=1

 

b) 0=-(2x+1)

0=-2x-1

-1=-2x|:(-2)

x=1/2

 

c)12y-(y-5)=10y-1

11y+5=10y-1

11y-10y=-1-5

y=-6