Упрости выражения. b+5b+6b b=300 b+b+b b=300 c+c+2c c=50 d+d+d+d d=800 14p+20p+p p =80 4s+3s+7c s=20 9p+20p+8p p=80 10a+3a+2a a=30 t+2t+t+5t t=90

b+5b+6b=12b 12*300 =3600b+b+b =3b3*300 =900c+c+2c =4c4*50 =200d+d+d+d =4d4*800 =320014p+20p+p =35p 35*80=2800 4s+3s+7s=14 s14*20=280 9p+20p+8p =37p37*80 =296010a+3a+2a =15a15*30 =450t+2t+t+5t =9t9*90=810