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2x-6≤4
2x≤10 /:2
x≤5
x∈(-∞;5>
j) (6-x):2 ≤ 7 /*2
6-x≤14
-x≤14-6
-x≤8 /*(-1)
x≥-8
x∈<-8;+∞)
k) 1/2(3x + 5) > 2 /*2
3x+5>4
3x>-1 /:3
x>-1/3
x∈(-1/3;+∞)
l) 2(x+1) < 4x
2x+2<4x
-2x<-2 /:(-2)
x>1
x∈(1;+∞)
2x-6≤4
2x≤10/:2
x≤5
j) (6-x):2 ≤ 7
3-½x≤7
-½x≤4/:(-½)
x≥8
k) 1/2(3x + 5) > 2
1,5x+2,5>2
1,5x>-0,5/:1,5
x>⅓
l) 2(x+1) < 4x
2x+2 <4x
-2x<-2/:(-2)
x>1
liczę na naj ;D
2x-6 ≤ 4
2x≤ 4+6
2x≤ 110 /:2
x≤5
j) (6-x):2 ≤ 7
k) 1/2(3x + 5) > 2
3/2x+5/2>2
3/2x>2-5/2
3/2x>-1/2
x>-1/3
l) 2(x+1) < 4x
2x+2< 4x
2< 4x-2x
2< 2x /:2
1<x