Rozwiąż nierówności: a) 3x/2 - 1 > x/4b)x/3 - 3x/5 ≥ -1c) x-9/4 - 2(3x-1)/3 ≥ 0 Potzrebne na DZISIAJ .Prosze
a) 3x/2 - 1 > x/4 I*4
6x-1=x I+1
6x=x+1 I-x
5x=1 I/5
x=1/5
b)x/3 - 3x/5 ≥ -1 I*15
5x-9x ≥ -15
-4x ≥ -15 I/(-4)
x\leq 3i 3/4
c) x-9/4 - 2(3x-1)/3 ≥ 0 I*12
3(x-9)-8(3x-1)≥12
3x-27-24x+8≥12
21x-19≥12 I+19
21x≥21 I-21
x≥1
a) 3x/2 - 1 > x/4 /*4
6x-4>x
6x-x>4
5x>4/:5
x>4/5
b) x/3 - 3x/5 ≥ -1 /*15
5x-9x≥-15
-4x≥-15 /:(-4)
x≤3 3/5
c) x-9/4 - 2(3x-1)/3 ≥ 0 /*12
3x-27-24x+8≥0
-21x≥27-8
-21x≥-19
x≤19/21
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a) 3x/2 - 1 > x/4 I*4
6x-1=x I+1
6x=x+1 I-x
5x=1 I/5
x=1/5
b)x/3 - 3x/5 ≥ -1 I*15
5x-9x ≥ -15
-4x ≥ -15 I/(-4)
x\leq 3i 3/4
c) x-9/4 - 2(3x-1)/3 ≥ 0 I*12
3(x-9)-8(3x-1)≥12
3x-27-24x+8≥12
21x-19≥12 I+19
21x≥21 I-21
x≥1
a) 3x/2 - 1 > x/4 /*4
6x-4>x
6x-x>4
5x>4/:5
x>4/5
b) x/3 - 3x/5 ≥ -1 /*15
5x-9x≥-15
-4x≥-15 /:(-4)
x≤3 3/5
c) x-9/4 - 2(3x-1)/3 ≥ 0 /*12
3x-27-24x+8≥0
-21x≥27-8
-21x≥-19
x≤19/21