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Lerok [7]
3 years ago
5

1. 3x + 7 = 13 (x = -2; x = 2; x = 5)

Mathematics
2 answers:
White raven [17]3 years ago
7 0

3x + 7 = 1 3

3x = 13 - 7

3x = 6

x = 6/3

x = 2

Leya [2.2K]3 years ago
7 0

Answer: x=2

Step-by-step explanation:

I am assuming you are asking which x fits the equation. To see if x works for the equation, you would plug it in.

x=-2

3(-2)+7=13

-6+7=13

1≠13

x=2

3(2)+7=13

6+7=13

13=13

x=5

3(5)+7=13

15+7=13

22≠13

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