1. Rozwiąż nierównośc:
a)
b) 2x+3<10
c) 8x+11 27
d) 2x+5<3x+11
e) –x+2 x-2
f) 2x+5-x x+11
g) 5x-11>3x+6
h) 3x+18 3x+9
i) 2x-5 -x+10
j) x-17>-2x-17
k) x<-x
l) 2x+5 3x+10
2.Rozwiąż nierównośc:
a) x/3 + 2/3 > 1
b)x/6 - 1 < 1/3 - x/2
c) (x-1)/2 + 1/4 ≤ (x+1)/2 + (2x+1)/4
d)(x-3)/2 + 3/2 > (x+3)/4 + (x-1)/8
e) (x-1)/6 – (x-3)/18 < (x+3)/9 - 1/18
f)(x+5)/3-2≤(x-3)/4- (x+4)/3+1/6
g)(x-3)/2+ 3/2>(x+1)/5+3/10 x
h)x/3+3 ≥ (1-x)/7+22/21
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1 b) 2x+3<10
2x<10-3
2x<7 / :2
x= 7/2
c) 8x+11<27
8x<27-11
8x<16 /:8
x<2
d) 2x+5<3x+11
2x-3x<11-5
-x<6 / (-)
x>-6
e) –x+2<x-2
-x-x<-2-2
-2x<-4 /:(-2)
x>2
f) 2x+5-x<x+11
2x-x-x<11-5
0<6
g) 5x-11>3x+6
5x-3x>11+6
2x>17 / :2
x> 17/2
h) 3x+18>3x+9
3x-3x>9-18
0>-9
i) 2x-5>-x+10
2x+x>10+5
3x>15 /:3
x>5
j) x-17>-2x-17
x+2x>-17+17
3x>0
k) x<-x
x+x<0
2x<0
l) 2x+5<3x+10
2x-3x<10-5
-x<5 / (-)
x>-5
2. a) x/3 + 2/3 > 1 / *3
x+2>3
x>1
b) )x/6 - 1 < 1/3 - x/2 /*6
x-6<2-3x
x+3x<2+6
4x<8 /:4
x<2
c) (x-1)/2 + 1/4 ≤ (x+1)/2 + (2x+1)/4 / *4
2x-2+1≤2x+2+2x+1
2x-2x-2x≤-1+2+1
-2x≤2 /:(-2)
x≤(odwróć znak)-1
d) (x-3)/2 + 3/2 > (x+3)/4 + (x-1)/8 /*8
4x-12+12>2x+6+x-1
4x-2x-x>6-1
x>5
e) (x-1)/6 – (x-3)/18 < (x+3)/9 - 1/18 /*18
3x-3-x+3<2x+6-1
3x-x-2x<5
0<5
f) (x+5)/3-2≤(x-3)/4- (x+4)/3+1/6 /*12
4x+20-24≤3x+12-4x-16+2
4x-3x+4x≤-20+24+12-16+2
5x≤2 /:5
x≤2/5
g) (x-3)/2+3/2>(x+1)/5+3/10x /*10
5x-15+15>2x+2+3/x /x
5x2-15x+15x>2x2+2x+3
5x2-2x2-2x>3
3x2-2x>3
h) x/3+3 ≥ (1-x)/7+22/21 /*21
7x+63≥3-3x+22
7x+3x≥3-22-63
10x≥-85 /:10
x≥-8,5