a)3x+7≥2x-3
b)½(10x-10)>4x+5
c)½(2x+6)≥-3x-7
a) 3x+7≥2x-3
3x-2x ≥ -3-7
x ≥ -10
b) ½(10x-10)>4x+5
5x-5> 4x+5
5x-4x >5+5
x>10
c) ½(2x+6)≥-3x-7
x+3 ≥-3x-7
x+3x ≥ -7-3
4x ≥ -10
x ≥ -2,5
a)
6x2+9x=14x+11
9x+6x2-14x=11
x=11
b)
5-5>4x+5
4x>5-5-5
4x>-5
x<-1,25
c)
1+3>3x+7
1+3+7>3x
3x<11 /3
x=3 i 2/3
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a) 3x+7≥2x-3
3x-2x ≥ -3-7
x ≥ -10
b) ½(10x-10)>4x+5
5x-5> 4x+5
5x-4x >5+5
x>10
c) ½(2x+6)≥-3x-7
x+3 ≥-3x-7
x+3x ≥ -7-3
4x ≥ -10
x ≥ -2,5
a)
6x2+9x=14x+11
9x+6x2-14x=11
x=11
b)
5-5>4x+5
4x>5-5-5
4x>-5
x<-1,25
c)
1+3>3x+7
1+3+7>3x
3x<11 /3
x=3 i 2/3