Question

oblicz:

a) 1/4x-6=12

b) 2x - 1/2= - 14

c)- 1/8x + 1/4 =8

d)4(x- 1/4)=8

daje naj! ;p

prosze o obliczenia z gory dzieki ;)

Answer 1

a) 1/4x=18

x=72

b)2x=-14+1/2

2x=-13,5

x=6,75

c) -1/8=7,75

x=-72

d) 4x-1=8

4x=9

x=2,25

Answer 2

a) 1/4x-6=12

1/4x=12+6

1/4x=18  /:1/4

x=18*4/1

x=72

b) 2x - 1/2= - 14

2x=-14+1/2

2x=-13 1/2/:2

x=-27/2:2

x=-27/2*1/2

x=-27/4

x=-6 3/4

c)- 1/8x + 1/4 =8

-1/8x=8-1/4

-1/8x=7 3/4  /:(-1/8)

x=31/4:(-1/8)

x=31/4*(-8/1)

x=-62

d)4(x- 1/4)=8

4x-1=8

4x=8+1

4x=9 /:4

x=9/4

x=2 1/4