1. a) 4(2-3x)+10x>(albo równe) 12 b)3-10a>-2(4a+1) c)3(x-2)-5(2x-1)>0 d)5(x-3)-8(2x+1)>-3

a) 4(2-3x)+10x≥12 8-12x+10≥12 -12x≥12-8-10 -12x≥-6|:-12 x≤2 b)3-10a>-2(4a+1) 3-10a>-8a-2 -10a+8a>-2-3 -2a>-5|:-2 a<2.5 c)3(x-2)-5(2x-1)>0 3x-6-10x+5>0 -7x>1|:-7 x< -(1/7) d)5(x-3)-8(2x+1)>-3 5x-15-16x-8>-3 -11x>20|:-11 x>- (20/11)

a)... 8-12x+10x>(...)12 8-2x>(...)12|-8 -2x>(..)4|: (-2) x>(...)-2 b)... 3-10a>-8a-2|-3 -10a>-8a-5|+8a -2a>-5|: (-2) a>2,5 c)... 3x-6-10x+5>0 -7x-1>0|+1 -7x>1|: (-7) x> -1/7 d)... 5x-15-16x-8>-3 11x-23>-3|+23 11x?20| : 11 x> 20/11 x>1 9/20 *../... ułamek

a) 4(2-3x)+10x>(albo równe) 12 8-12x+10x≥12 -12x+10x≥12-8 -2x≥4 x≤-2 b) 3-10a>-2(4a+1) 3-10a>-8a-2 -10a+8a>-2-3 -2a>-5 a<2,5 c) 3(x-2)-5(2x-1)>0 3x-6-10x+5>0 3x-10x>0+6-5 -7x>1 x<-¹/₇ d) 5(x-3)-8(2x+1)>-3 5x-15-16x-8>-3 5x-16x>-3+15+8 -11x>20 x<-1⁹/₂₀