Answer:
The second choice, or x = 4.5
Explanation:
First. divide both sides by 5.
1 + 2x = 20.
Then subtract each side by 1.
2x = 9.
Divide both sides by 2, and 9/2 = 4.5 .
Answer: x = 4.5
Subtract 5 from both sides
5 + 10x - 5 = 50 - 5
Simplify
10x = 45
Divide both sides by 10
10x / 10 = 45 / 10
x = 9 / 2
Divide
9 / 2 = 4.5
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