Surface Pro 5 charger for Pro 7

[pcpartpicker]

Hi guys.
I purchased used Surface Pro 7 model no. 1866 but charger/adapter is not included except the one which came with it's dock.
1.May I use charger with it's dock to charge the Surface?
2.May I use charger from my Surface Pro 5 (pics below)?

 

[GreyFox7]

either should be fine

 

[pcpartpicker]

either should be fine

Okay.But the pins on the dock charger look like this:

 

[GreyFox7]

the extra pins are for data transfer the power is on the same pins as the charger only cable.

 

[pcpartpicker]

Ok but perfectly fine charge via dock?
It has the charger which is hooked up to it and then extra cable (pic above) goes to Surface,