f)x/2=2/5(4-x)-4 g)2x-1/5 - x-2/2=0,7x i jeszcze jedno zad b)1- 6/7x= 4/7

x/2=2/5(4-x)-4 /*10 5x=4(4-x)-40 5x=16-4x-40 x=-24 2x-1/5-(x-2)/2=0,7x /*10 20x-2-5(x-2)=7x 20x-2-5x+10=7x 8x=-8 x=-1 1-6/7x=4/7 /*7 7-6x=4 -6x=-3 x=1/2

f) x/2=8/5 - 2/5 x - 4 1/2 x + 2/5 x = 8/5 - 4 9/10 x = -12/5 x= -12/5 · 10/9 x= -8/3 g)2x -1/5 - (x-2)/2 = 0,7x mnożymy stronami razy 10 20x - 2 - 5(x-2) = 7x 20x - 2 - 5x +10 - 7x=0 8x=-8 x=-1 b)1- 6/7x = 4/7 1-4/7 = 6/7x 3/7=6/7x x=3/7 · 7/6 x= 1/2