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0,5x=1,6-0,4x-4
0,9x=-2,4
x=-8/3=-2⅔
g) 2x-1/5 - x-2/2= 0,7x
2x-0,2-0,5(x-2)=0,7x
2x-0,2-0,5x+1=0,7x
0,8x=-0,8
x=-1
h) 2x- 3x+5/4= ¼x-1
2x-0,25(3x+5)=0,25x-1
2x-0,75x-1,25=0,25x-1
x=0,25