Name the property of equality that justifies the statement: if a+b=c, then a=c-b

1. a = b means a is equal to b.
2. a ≠ b means a does not equal b.Operations1. Addition: If a = b then a + c = b + c.2. Subtraction: If a = b then a – c = b– c.
3. Multiplication: If a = b then ac = bc. 
4. Division: If a = b and c ≠ 0 then a/c = b/c.