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28 votes
28 votes
Hihii who knows the answer to this question??

Hihii who knows the answer to this question??-example-1
User Narigo
by
3.1k points

2 Answers

10 votes
10 votes
X times 2+11
Explaination me smart
User Mohamed Ahmed
by
3.1k points
15 votes
15 votes

Part A

x = some unknown number

2x = doubling that number

2x+11 = adding on eleven

Answer: 2x+11 = 25

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Part B

If we knew what x was, then we can compute 2x+11 using the order of operations PEMDAS. Because x is unknown, we follow PEMDAS in reverse to isolate x.

So we'll undo the addition first by subtracting 11 from both sides. Then we undo the multiplication by dividing both sides by 2.

2x+11 = 25

2x+11-11 = 25-11 ..... subtract 11 from both sides

2x = 14

2x/2 = 14/2 ...... divide both sides by 2

x = 7

The number the person thought of was 7. Double 7 to get 14. Add on eleven to get 14+11 = 25.

Answer: x = 7

User Toney
by
2.9k points
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