15x + 45 = 5x – 4
15x – 5x = – 4 – 45
10x = -49
x = -4.9
2.4x-5(0.2+4.2)=0.4x+5.8
2.4x – 1 – 21 = 0.4x + 5.8
2,4x – 0,4x = 5,8 + 21 + 1
2x = 27.8
x = 13.9
15x + 45 = 5x – 4
15x – 5x = – 4 – 45
10x = -49
x = -4.9
2.4x-5(0.2+4.2)=0.4x+5.8
2.4x – 1 – 21 = 0.4x + 5.8
2,4x – 0,4x = 5,8 + 21 + 1
2x = 27.8
x = 13.9