Rozwiąż równania i nierówności:
a) 5(x-2) - x = 2x+1
b) -3(x-4)> -5 (3-x)
5x - 10 - x = 2x + 1
2x = 11 /:2
x = 5,5
b) -3(x-4) > -5 (3-x)
-3x + 12 > -15 + 5x
-8x > -27 /:(-8)
x < 3,375
5x-10-x=2x+1
4x-10=2x+1
4x-2x=10+1
2x=11 /:2
x=11/2
-3x+12>-15+5x
-3x-5x>-15-12
-8x>-27 /:(-8)
x<-27/-8=27/8
x nalezy od (-∞;27/8)
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a) 5(x-2) - x = 2x+1
5x - 10 - x = 2x + 1
2x = 11 /:2
x = 5,5
b) -3(x-4) > -5 (3-x)
-3x + 12 > -15 + 5x
-8x > -27 /:(-8)
x < 3,375
a) 5(x-2) - x = 2x+1
5x-10-x=2x+1
4x-10=2x+1
4x-2x=10+1
2x=11 /:2
x=11/2
b) -3(x-4)> -5 (3-x)
-3x+12>-15+5x
-3x-5x>-15-12
-8x>-27 /:(-8)
x<-27/-8=27/8
x nalezy od (-∞;27/8)