e) 3x-5/2-5x-1/10=0/×10 30x-25-50x-1=0 - 20×=26/ (-20) x= - 13/10 f) x/2=2/5 (4-x)-4/×10 5x = 4 ( 4-x) - 40 5x = 16 - 4x - 40 9x = - 24/÷9 x = - 8/3 g) 2x - 1/5 - x -2/2 = 0,7x/×10 20x - 2 - 5 (x-2) = 7x 20x - 2 - 5x + 10 = 7x 8x = - 8/÷ 8 x = - 1 h) 2x - 3x + 5/4 = - 1/4x - 1 - x + 1/4 x = - 1 - 5/4/ × 4 - 4x + x = - 4 - 5 - 3x = - 9/ ÷ (-3) x = 3
e)3x-5/2-5x-1/10=0 /*10 30x-25-50x-1=0 30x-50x=1+25 -20x=26 /:(-20) x=-26/20 x=-1 6/20 x=-1 3/10 f)x/2=2/5(4-x)-4 x/2=8/5-2/5x-4 /*10 5x=16-4x-40 5x+4x=-40+16 9x=-24 /:9 x=-24/9 x=-2 6/9 x=-2 2/3 g)2x-1/5-x-2/2=0,7x /*10 g) 2x-1/5-x-2/2=0,7x 20x-2-5x+10=7x 2x-1/5-x-1=0,7x /*10 20x-5x-7x=-10+2 20x-2-10x-10=7x 8x=-8 /:8 20x-10x-7x=10+2 x=-1 3x=12 /:3 x=4 h)2x-3x+5/4=-1/4x-1 /*4 8x-12x+5=-x-4 8x-12x+x=-4-5 -3x=-9 /:(-3) x=3