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5(y-2) + 1 - 5(2y-5) = 3(8-4y)
5y-10+1-10y+25 = 24-12y
7y = 8
y= 8/7 = 1 i 1/7
2. 0,1x + 0,1 - 0,15x-0,5 = 0,4 - 0,35x
0,3x = 0,8
x= 0,375