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# Tutor profile: Ibukun D.

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Ibukun D.
Medical Student
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## Questions

### Subject:Pre-Algebra

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Question:

2x+5=13 What is x?

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Ibukun D.

2x+5=13 Minus 5 from both sides. 13-5=8 So 2x=8 Divide both sides by 2. 2x divided by 2 =x 8 divided by 2=4 Therefore, x=4

### Subject:Basic Math

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Question:

12x15?

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Ibukun D.

We must first break down these big numbers into smaller numbers. 15=10+5 =12x(10+5) 12x10=120 12x5=60 Add these numbers together. 120+60=180 therefore, 12x15=180

### Subject:Algebra

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Question:

Evaluate: |4 - 8(3 - 12)| - |5 - 11|

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Ibukun D.

According to order of operations, inner brackets first. Hence |4 - 8(3 - 12)| - |5 - 11| = |4 - 8*(-9)| - |5 - 11| According to order of operations, multiplication within absolute value signs (which may be considered as brackets when it comes to order of operations) next. Hence = |4 + 72| - |5 - 11| = |76| - |-6| = 76 - 6 = 70

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