Question

вычислите (-0,2)^-3+(1/7)^3*49
Срочно надо, помогите

Answer 1

1) (-0,2)^(-3) = (-10/2)^3 = -125
2) (1/7)^3 = 1/343
3) 1/343*49/1=1/7
4) -125/1+1/7=-875/7+1/7= -874/7= -124,85= -124,9