Question

Rozwiaz rownania ;D
a)1/2x - 4 =x-6
b) x-5 = 1/3x + 1
c) x/4 -1/4= 2
d) x/5 - 3 = x+ 1/5

Ludzie ważne...!!!

potrzebuje na zaraz:D:D:D:D

szybko.:D:xD

Answer 1

a)1/2x - 4 =x-6   /* 2
x - 8 = 2x - 12

x - 2x = -12 + 8

-x = -4  / *(-1)

x = 4

 

b) x-5 = 1/3x + 1      / * 3

3x - 15 = x + 3

3x - x = 3 + 15

2x = 18  /:2

x = 9

 

c) x/4 -1/4= 2   / * 4

x - 1 = 8

x = 8 + 1

x = 9

 

d) x/5 - 3 = x+ 1/5   / * 5

x - 15 = 5x + 1

x - 5x = 1 + 15

- 4x = 16   / : (-4)

 x = - 4

 

Answer 2

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

1/2x-x=-6+4

-1/2x=-2/*(-2)

x=4

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

x-1/3x=1+5

2/3x=6/*3

2x=18/:2

x=9

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

x-1=8

x=9

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

x-15=5x+1

x-5x=16

-4x=16/:(-4)

x=-4