Rozwiązane

Prosze z obliczeniami.

a) x/2 - 6 = x - 14
b)-11x+6(x-2)=4x-7(5-2x)
c)4(x+2)<6x-10
d)x-3/12 + x-1/6 > x+2/9 - 1
e)3/8 (x+1/4)>_ 5/6x + 2
f)0,4 y - 3,2 _> - 0,6y - 0,2
g)(2x-3)do kwadratu > (2x-2)(2x+1)

Odpowiedź :

Jusia32viz
a. -----------
b.-11x+6x+12=4x-35+14x
-11x+6x-4x-14x=-12+35
-22x=22
x=22+22
x=44
d. x+x-3\12-2\12 >x+2\9-9\9
2x-5\12 > x-7\9

c. 4x+8 < 6x-10
x=8-4 <x=-1o-6
x=4<x= -16
e.-----
f.------
g. 4x do kwadratu +9 >. 4x do kwadratu -2
x do kwadratu=9-4 > x do kwadratu -2-4
x do kwadratu=5 > x do kwadratu =-6
a) x/2-x = -14+6
x/2-x = -14+6
1/2x = -8 /*10
5x = -80 /:5
x = -16

b) -11x + 6x - 12 = 4x - 35 - 14x
-5x - 12 = -10x - 35
-12 + 35 = -10x + 5x
23 = -5x /:(-5)
x= -4,6
a) x/2-x = -14+6
x/2-x = -14+6
1/2x = -8 /*10
5x = -80 /:5
x = -16

b) -11x + 6x - 12 = 4x - 35 - 14x
-5x - 12 = -10x - 35
-12 + 35 = -10x + 5x
23 = -5x /:(-5)
x= -4,6

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