Mathematics, 17.06.2020 20:57, gracianoa

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

Answers: 1

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3(x + 5) = 7x - 13 3x + 15 = 7x - 13
- 3x -3x
1557x - 13
+13 +13
28 = 7x