a)\(2^4-50:25+13.7\)\(=16-2+91=14+91=105\)
b) \(32+5.13-3.2^3=32+65-3.8=97-24=75\)
c) \(2.\left[\left(195+35:7\right):8+195\right]-400\)
\(=2.\left[\left(195+5\right):8+195\right]-400\)
\(=2.\left(200:8+195\right)-400=2.\left(25+195\right)-400\)
\(=2.\left(220\right)-400=440-400=40\)