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Tutor profile: Dana H.

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Dana H.
Licensed Elementary and Special Education Teacher/Tutor/Home School Mom
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Questions

Subject: Pre-Algebra

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Question:

Solve for X 3X= 15

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Dana H.
Answer:

When solving for X you want to get X alone on one side of the equal sign. 3 is multiplied to X so use the inverse operation division (division is opposite to multiplication) to cancel out the 3 and get X alone. Divide both sides by 3. 3X\3 = 15\3 X = 5

Subject: Basic Math

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Question:

5 + 7=

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Dana H.
Answer:

When adding it is helpful to use some objects from around the house. Gather 5 objects such as coins, teddy bears, pencils... then gather 7 of the same or different objects then add them together. XXXXX + XXXXXXX= XXXXXXXXXXXX 5+ 7 =12

Subject: Algebra

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Question:

Simplify then solve for X 3X+ 7 -5X -2= 11 + 2X

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Dana H.
Answer:

First simplify by adding like terms. A like term is a term that has the same letter to the same power or like terms can be numbers that have no letter. In the problem 3X, -5X, 2X are like terms and can be combined. 7, -2, and 11 are like terms and can be combined. When solving for X you want to get X alone on one side of the equal side. So bring 2X over to the left side of the equal side by doing the inverse operation, subtracting 2X from both sides then combine the terms with X. 3X- 5X- 2X+ 7- 2 = 11 +2X- 2X -4X +7 -2= 11 Continue to work on getting X alone by bringing the terms with just a number no X to the right side and combine them. -4X +7 -7 -2 +2= 11 -7+2 -4X=6 Then divide by -4 to get X alone -4X/-4 =6/-4 Reduce the fraction and the answer is X = -3/2

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