Question

Rozwiąż równania:

15x+ x+2/2 = 5(3x +1)

x/3 = 2x -5/6

5[2 - 6(x-1) ] = 10

1/2 [7-3(x+2) + 11x] =0

3- x+2/4 = 4+ x-1/3

-x (4+x) +3= x(7-x) +5 (x- 9)

Bardzo proszę o wszystkie obliczenia i z góry dziękuję za pomoc : ))

Answer 1

15x+ x+2/2 = 5(3x +1)

16x+1=15x+5

16x-15x= 5-1

x=4

 

x/3 = 2x -5/6    / *6

2x = 12x-5

2x-12x=-5

-10x = -5  / :(-10)

x=1/2

 

5[2 - 6(x-1) ] = 10

5[2-6x+6] = 10

5 [-6x+8] = 10

-30x+40 = 10

-30x = 10-40

-30x = -30  / : (-30)

x= 1

 

 

 

3- x+2/4 = 4+ x-1/3  / *12

36-12x+6=48+12x-4

42-12x = 44 + 12x

-12x-12x= 44-42

-24x = 2 / : (-24)

x= (-1/12)

 

 -x (4+x) +3= x(7-x) +5 (x- 9)

-4x-x²+3=7x-x²+5x-45 / :x²

-4x+3=12x-45

-4x-12x= -45 - 3

-16x = -48 / : (-16)

x = 3

 

Answer 2

15x+x+2/2 = 5(3x+1)

15x+x+1=15x+5

x=4

 

 

x/3=2x-5/6 /*6

6*x/3=6*2x-6*5/6

2x=12x-5

-10x=-5 /:(-10)

x=1/2