1. 3x + 7 = 13 (x = -2; x = 2; x = 5)
2 answers:
3x + 7 = 1 3
3x = 13 - 7
3x = 6
x = 6/3
x = 2
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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