6(1.2x+0.5)-1.3x=0.5x+5.7
7.2x + 3 – 1.3x = 0.5x + 5.7
7,2x – 1,3x – 0,5x = 5,7 – 3
5.4x = 2.7
x = 0.5
6(1.2x+0.5)-1.3x=0.5x+5.7
7.2x + 3 – 1.3x = 0.5x + 5.7
7,2x – 1,3x – 0,5x = 5,7 – 3
5.4x = 2.7
x = 0.5