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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