Решите уравнение 4.78x+1.72x-47.84=151.71
6.5x=199.55 x=199.55/6.5 x=30,7
4.78x+1.72x-47.84=151.71 4.78х+1.72х=151.71+47.84 6.5х=199.55 х=199.55:6.5 х=30.7