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Can someone please help me I don’t understand this please show work plus I got it wrong it’s not C

Can someone please help me I dont understand this please show work plus I got it wrong its not C class=

Respuesta :

B,
The 25 N and 5 N force are acting in the same direction so we can add them together, but the 10 N force acts in the opposite direction so you subtract it.
25 N + 5 N - 10 N = 20 N