Уравнение (0, 9×+4, 55)*0, 3=1, 5 2 уравнение 60, 8:(5, 3×-2, 15)=5
(0,9x+4.55)*0.3=1.5 0.9x+4.55=1.5/0.3 0.9x=5-4.55 x=0.45/0.9 x=0.5 60.8/(5.3x-2.15)=5 5.3x-2.15=60.8/5 5.3x=12.16+2.15 x=14.31/5.3 x=2.7