What is the frequency of the sum of several sine waves?

[sherled]

I am given three sine waves with individual frequency being 10 Hz, 50 Hz, and 100 Hz.
What is the frequency of the following :

y(t) = sin(2π10t) + sin(2π50t) + sin(2π100t)​

Is it simply 100, the LCM of all the sin waves? If not, How to calculate the frequency of y(t) ?​

 

[Merlin3189]

I would say 10Hz, the HCF of the frequencies.
All three frequencies are still present, combining to give a non-sinusoidal waveform. This combined waveform is periodic over 0.1sec, due to the 10Hz component.