Question

Помагите решить 0.4(5d-4)-3.4 0.6 d при d=5 8(1/4n+0.6)-9n-10 при n=0.4
-0.9(6-5m)+2.5m+12 при m=-0.8

Answer 1

2n+4.8-9n-10=2n-9n+4.8-10=-7n-5.2=7n*0.4=-2.8-5.2=-8