0.54+x4+x4+x-0.4x−3x-3x−3=2.5
2 + 0.5x – 0.4x + 1.2 = 2.5
0,5x – 0,4x = 2,5 – 1,2 – 2
0.1x = -0.7
x = -7
0.54+x4+x4+x-0.4x−3x-3x−3=2.5
2 + 0.5x – 0.4x + 1.2 = 2.5
0,5x – 0,4x = 2,5 – 1,2 – 2
0.1x = -0.7
x = -7