The property used is Additive Property of Equality, the correct option is B.
What is the Additive Property of Equality?
The property to solve an equation that adds a positive or negative number to both sides of the equation such that the equation sides remain the same.
To prove that x = 10 for given expression x-6 = 4
6 is added to both sides of the equation, which keeps the same value of the equation so that the 6 on the left-hand side gets canceled and the value of x is determined.
This property is Additive Property of Equality, the correct option is B.
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