a)
x-5≥0
x≥5
et
-2x+6≥0
-2x≥-6
x≥ -6/-2
x≥ 3
b)
3x-5>0
3x>5
x>5/3
x+4>0
x>-4
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a)
x-5≥0
x≥5
et
-2x+6≥0
-2x≥-6
x≥ -6/-2
x≥ 3
b)
3x-5>0
3x>5
x>5/3
et
x+4>0
x>-4