3 (x + 5) = 7x - 13
3x + 15 = 7x - 13
- 3x - 3x
1557x - 13
+13 + 13
28 = 7x
7 7
4=x
x=4
What is the first step of this algebraic proof after the given?
Addition
Subtraction
Division
Multiplication
ОО
Distributive
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