" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
-3x-7 < 2
-3x < 2+7
-3x < 9 /:(-3)
x > -3
Punkt b)
(-2/3)x+1 ≤ 5 /*3
-2x+3 ≤ 15
-2x ≤ 15-3
-2x ≤ 12 /:(-2)
x ≥ -6
Punkt c)
3(x-1) ≥ x+5
3x-3 ≥ x+5
3x-x ≥ 5+3
2x ≥ 8 /:2
x ≥ 4
Punkt d)
2(x+(1/4)) > (1/2)x+4
2x+(1/2) > (1/2)x+4 /*2
4x+1 > x+8
4x-x > 8-1
3x > 7 /:3
x > 2+(1/3)
Punkt e)
(x-3)/2 < (x+2)/3 /*6
3(x-3) < 2(x+2)
3x-9 < 2x+4
3x-2x < 4+9
x < 13
Punkt f)
(2-x)/5 ≤ (x+1)/2 /*10
2(2-x) ≤ 5(x+1)
4-2x ≤ 5x+5
-2x-5x ≤ 5-4
-7x ≤ 1 /:(-7)
x ≥ -1/7
Graficzne rozwiązanie w załączniku...