Odpowiedzi

2009-12-09T22:32:32+01:00

a) 2x - 11 > 4x + 7
2x-4x>7+11
-2x>18
x<-9

b) 8x + 1 ≥ 10x - 7
8x-10x ≥-7-1
-2x≥-8
x≤4
1 5 1
2009-12-09T22:44:50+01:00
2x-11>4x+7
-18>2x
2x<-18 /:2
x<-9

b)
8x + 1 ≥ 10x - 7
-2x≥-8 /:(-2)
x≤4
2009-12-10T00:41:15+01:00
A)
2x-11>4x+7
-9>x

b)
8x+1≥ 10x - 7
8 ≥ 2x
4 ≥ x