Sum where Ax = Bx + Cx for the entire column A

[JK_Aloha]

Hello.

As the subject states I am trying to input a command where the Sum of Bx + Cx is displayed in Ax where X is the row number.

I understand I can manually enter A1 = B1 + C1 etc. This is an overly time consuming activity.

I would like to enter a single formula such that Ax = Bx + Cx where X = the row number between a range; for example between rows 8 and 150.

Thanks.

[#2]

@JK_Aloha It is only possible if you are Microsoft-365. You can simply use in A2 cell as per my screenshot.

=B2:B13+C2:C13

 Or can use BYROW() function like-

=BYROW(B2:C13,LAMBDA(x,SUM(x)))