Răspunsuri

2014-10-07T19:04:10+03:00
2×{3×[4×5×x+1)-3]-2}=2
2×{3×[20x+1)-3]-2}=2
2×{60x+3-3]-2}=2
120x-2=2
120x=4
x=4/120
x=1/30