Question

 

 

Answer 1

b: \(=21.9-2+5.4=25.3\)

c: \(=39.5+21.56=61.06\)

d: \(=19.9\left(78.8-58.8\right)=19.9\cdot20=398\)

e: \(=234\left(3.61+2\cdot3.195\right)=234\cdot10=2340\)